baber/WOPTO huggingface dataset:
Patent ES-2373262-B1 (ES)
Title: Método de diagnóstico diferencial de la enfermedad de chagas.
Inventor: THOMAS CARAZO MARI CARMEN
IPC: C07K7/08
Filed: 2010-07-16
Granted: 2013-05-06
Abstract: Método de diagnóstico diferencial de la enfermedad de Chagas.#La presente invención se refiere a un péptido y al método de obtención de datos útiles para el diagnóstico diferencial de la enfermedad de Chagas que permite diferenciar pacientes con Chagas crónico de individuos sanos y de aquellos con otras enfermedades infecciosas afines, basado en la detección anticuerpos frente a dicho péptido. Además, este método permite diferenciar pacientes con la enfermedad de Chagas en forma clínica indeterminada de aquellos pacientes de Chagas con patologías cardíaca y digestiva. También permite diferenciar pacientes con cadiopatía chagásica de aquellos con alteraciones cardíacas no chagásicas (miocarditis, cardiopatías idiopáticas, infarto de miocardio, etc.). La presente invención permite también evaluar la respuesta al tratamiento de dicha enfermedad en enfermos de Chagas en fase crónica, especialmente con alteraciones cardíacas. La presente invención se refiere también a un kit para llevar a cabo dicho método de diagnóstico diferencial.
Patent ES-2400099-B1 (ES)
Title: Producto lácteo congelable
Inventor: SANCHEZ RAMS CRISTINA
IPC: A23L29/10
Filed: 2012-05-11
Granted: 2014-03-21
Abstract: La invención se refiere a composiciones lácteas congelables que incluyen leche e inclusiones de gas procesos para elaborar dichas composiciones que comprende la mezcla de los componentes, someter la mezcla a un gas para el obtener el sobredimensionado, envasar y para congelarlas a una temperatura entre -25°C y -0,5°C, así como sus usos. La composición muestra un sobredimensionado del 25 % al 150 %.
Patent ES-2410379-B1 (ES)
Title: Método de protección del maíz
Inventor: IWATA ATSUSHI
IPC: A01N51/00
Filed: 2012-12-19
Granted: 2014-05-08
Abstract: Método de protección del maíz.#Se proporciona un método excelente de protección del maíz. Un método de protección del maíz que incluye las etapas de: A) formación de un surco en una tierra cultivada, B) siembra de una semilla de maíz en el surco, C) aplicación de un gránulo que contiene tiametoxiam, imidacloprid o tiacloprid como principio activo al surco y D) cierre del surco, ejerce un excelente efecto de protección sobre el cultivo del maíz.
Patent ES-2553002-B1 (ES)
Title: Dispositivo antipandeo para trípodes topográficos
Inventor: VERDU VAZQUEZ MARÍA AMPARO
IPC: F16M11/32
Filed: 2014-06-02
Granted: 2016-09-14
Abstract: Dispositivo antipandeo para trípodes topográficos.#La presente invención es un dispositivo que evita el pandeo ocasionado en los trípodes topográficos. Los aparatos topográficos tienen mucho peso que trasladan al trípode que los soporta, produciendo deformaciones en las patas del trípode que afectan a las medidas y estabilidad del sistema.#Al ser las patas de los trípodes cilíndricas y con medidas estándares, es posible crear un dispositivo que evite el pandeo de cada pata de forma muy sencilla.#El dispositivo antipandeo está formado por dos pletinas por cada pata que se acoplan entre sí y ejercen presión sobre la pata.#La invención es ligera, fácil de instalar, económica en su realización y sobre todo, ocupa muy poco espacio, característica muy importante ya que hay que tener en cuenta que el operador a la hora de realizar medidas se mueve alrededor del trípode continuamente y no puede haber ningún elemento que entorpezca el paso.
Patent ES-2476166-B1 (ES)
Title: Sustrato filtrante
Inventor: VINAS PICH CARLOS
IPC: D04H1/42
Filed: 2014-06-18
Granted: 2015-07-09
Abstract: La presente invención se refiere a sustrato filtrante no tejido de aire de estructura multicapa tridimensional a base de fibras, que comprende al menos 4 capas dispuestas unas encima de otras dispuestas de forma solidaria en el que hay una primera capa superior en contacto con el flujo de aire a filtrar que comprende unas fibras con finuras que van desde los 6 a los 20 dtex y longitudes que van de los 32 a los 80 mm y porque las demás capas comprenden fibras con finuras que van desde los 0.6 a los 10 dtex y longitudes que van de los 12 a los 64 mm. La presente invención también se refiere a un procedimiento para fabricar el sustrato objeto de la invención, así como al uso del mismo para elaborar filtros en industria farmacéutica, para aire acondicionado, para automovilismo, etc.
Patent ES-2584918-B1 (ES)
Title: Quemador de gas y campo de cocción a gas
Inventor: ACOSTA HERRERO LUIS
IPC: F23D14/20
Filed: 2015-03-31
Granted: 2017-07-11
Abstract: La invención hace referencia a un quemador de gas (3) para un campo de cocción a gas (1), con una parte inferior de quemador (4) que se puede disponer debajo de una placa de campo de cocción (2) del campo de cocción a gas (1), con una parte superior de quemador (18) que se puede disponer encima de la placa de campo de cocción (2) y que está unida con la parte inferior de quemador (4), y con un elemento térmico (11) y/o con un elemento de encendido que están alojados simultáneamente en una sección de alojamiento (12) de la parte inferior de quemador (4) y en una sección de alojamiento (27, 28) de la parte superior de quemador (18).
Patent HR-P20020354-B1 (HR)
Title: Power source for supplying water-based liquid to a system, and fire fighting installation
Inventor: SUNDHOLM GOERAN
IPC: A62C3/07
Filed: 2002-04-23
Abstract: The invention relates to a power source for supplying water-based liquid to a system, the power source comprising a container (5) for the water-based liquid and a pump unit (6) which comprises a pump (7) and a power source (8) for the pump, the pump unit being arranged to supply the water-based liquid from the container to the system via a pipe system (4) which is filled with a liquid. To enable economical supply of water-based liquid to a system without the risk of the liquid freezing, the pipe system (4) is filled with antifreeze and the power source comprises an additional container (9) which is filled with antifreeze and an additional pump unit (10) with a pump (11) and a power unit (12) for the pump, the additional pump unit being arranged to maintain a stand-by pressure in the pipe system via a pipeline (13) and to supply for this purpose antifreeze from the additional container to the pipe system (4) if the pressure in the pipeline drops below the stand-by pressure, whereby the pump unit (6) for pumping water-based liquid is arranged to feed water-based liquid which has a tendency to freeze into and out of the pipe system in liquid phase if the pressure in the pipe system drops below a certain level.
Patent HR-P20030416-B1 (HR)
Title: Raw material for the production of mineral fibres
Inventor: HAKALA JAN
IPC: C03C13/06
Filed: 2003-05-22
Abstract: The present invention concerns a raw material charge for the production of mineral fibres comprising leucogabbro, troctolite and dolomite rock, in the following amounts - leucogabbro 10 to 45 % by weight - troctolite  3 to 20 % by weight, and - dolomite  5 to 30 % by weight.
Patent JO-2020-B1 (JO)
Title: Coating material for emitting surfaces for the generation of electromagnetic waves and a process for the preparation thereof
Inventor: HELMUT REICHELT
IPC: C09D191/00
Filed: 1998-04-26
Granted: 1999-05-15
Abstract: The subject of this invention is a coating material for emitting surfaces for the generation of electromagnetic waves and a process for the preparation thereof. The coating material consists of a binding agent, an insulator, a dispersing agent, water and graphite that are all mixed with one another. According to the patent, the coating material composed of 55 to 60 % amount of substance of a base material containing binding agent, insulator, dispersing agent and distilled water and 35 to 40 % amount of substance graphite, wher the binding agent consists of distilled water, sulfated oil, phenols or benzisothiazolinone, casein, urea, alkali thinning agent and caprolactam. According to the process for the preperation of this coating material in the patent, the binding agent is prepared in a first process step,the base material is prepared In a second process step,,the base material then mixed with the graphite in a third process step. The results is a coating material exhibiting a large number of dipoles,formed from the graphite, the insulator and the bonding agent, and producing electromagnetic waves with a high emission level when excited.
Patent JO-P20130346-B1 (JO)
Title: Composition for use in a method of treating overweight and obesity in patients with high cardiovascular risk
Inventor: PRESTON KLASSEN
IPC: A61K31/137
Filed: 2013-12-01
Granted: 2022-03-14
Abstract: 0
Patent KR-810001918-B1 (KR)
Title: Method for carrying out doffing operation
Inventor: TAKUZYO TOUKA
IPC: D01H9/02
Filed: 1974-01-01
Granted: 1981-11-27
Abstract: An apparatus for carrying out doffing operations at each unit of a spinning machine comprises means for continuously delivery a yarn from spinning unit, an a take-up machanism provided with a friction roller and a cradle for rotatably supporting a fresh bobbin or a yarn package formed on bobbin in contacting relationship with friction roller.
Patent KR-800000429-B1 (KR)
Title: Purification of aliphatic phosphonic acids
Inventor: JACQUCES A
IPC: C07F9/34
Filed: 1975-05-29
Granted: 1980-05-26
Abstract: Aliphatic phosphonic acids (I, R1 = C1-6 alkyl, alkenyl, halo-substituted alkyl or halo-substituted alkenyl), useful as plant growth regulator, were separated from an impure reaction product containing aliphatic phosphonic halfester (II, R2 and R3 are C1-6 alkyl, alkenyl, halo-substituted alkyl, halo-substituted alkenyl) and phosphonic acid by using anhydrous hydrogen bromide or hydrogen chloride as extracting solvents.
Patent KR-810002068-B1 (KR)
Title: Process for waste water treatment with filler
Inventor: MORIMURA T
IPC: C02F3/10
Filed: 1977-01-20
Granted: 1981-12-27
Abstract: Wastewater was treated with mold(3) which had many honey comb-shaped hollows(2) as bacteria settlement material. The net-like agglomerations of synthetic resin filaments were manufd. by winding the filaments, which were melt-extruded perpendiculary from nozzle, with slower drawing speed than that of extrusion, followed by setting to make wastewater treating materials.
Patent KR-810001409-B1 (KR)
Title: Method of making pigment
Inventor: KIM MOON HO
IPC: B44D2/00
Filed: 1979-12-05
Granted: 1981-10-20
Abstract: The water color can be used for solid picture and also can be used for plane picture to mix water in it.  Much of normal water color which is vaporized with distilled water is prepared and chemicales of residue in milky liquid which a little polyethylene is swelled and filtrated by petroleum and much of water-soluble adhesive which is composed of resin of nitrate acid vinyl are mixed and headed with above vaporized water color.
Patent KR-850001406-B1 (KR)
Title: Process of producing coal agglomerated solids
Inventor: HASLMAYR JOHANN
IPC: C22B1/26
Filed: 1980-01-21
Granted: 1985-09-30
Abstract: In a process for producing cool, sintered, particulateagglomerated one solids, the solids are moved in a continuous stream through a heat-treating zone to form a layer of agglomerated solids and the hot particles thereof are obtained from the layer. The hot particles are moved in a continuous stream into a structurally separate cooler, which is heat-insulated from the heat-treating zone, and through the cooler in a cooling path. Cooled air is blown into the cooler to flow countercurrently to the continuous stream of hot particles in the cooling path, subjecting the hot particles to forced countercurrent cooling, whereby the cooling air is heated by contact with the particles and the now-heated cooling air is delivered into the heattreating zone.
Patent KR-830000475-B1 (KR)
Title: 텔레비전수상기의 전원제어장치
IPC: H04N5/63
Filed: 1980-02-06
Granted: 1983-03-09
Abstract: 내용 없음.
Patent KR-840001457-B1 (KR)
Title: Cryo genic freezer
Inventor: KLEE DAVID JEAN
IPC: F25D3/11
Filed: 1980-08-06
Granted: 1984-09-27
Abstract: The cryogenic freezer includes a baffle(66, 68) extending between an inlet(17) and an outlet(19) of an elongated tunnel(10). A porous cenveyor(32) extends through a lower chamber(74, 76) defined by the baffle in the tunnel, the baffle being vertically movable w.r.t. the conveyor. The height of the baffle may be adjusted by supporting it on stacked spacers(80), or the baffle may be moved up or down by pivoting hinged plates(62, 64). The distance between the baffle and conveyor can be adjusted to freeze products of different heights.
Patent KR-850000013-B1 (KR)
Title: Process for preparation of 2,3,6,7-tetrahydrothiazolo(3,2-a)pyrimidine derivatives
Inventor: DEBARRE FRANCOIS
IPC: A61K31/519
Filed: 1981-07-22
Granted: 1985-02-08
Abstract: Thiazolopyrimidines I (R = phenyl, alkyl, haloalkyl, alkenyl, cycloalkyl; R1 = H, phenyl, alkyl; RR1 = alkylene; R2, R3 = H, alkyl) , having antiarthritic, antiallegic and analgesic activity were prepd. Thus, 2.04 g 2-amino-2-thiazoline was treated with 3.33 g PhCH:CHCOCl to give 0.6 g 5-oxo-7-phenyl-2,3,6,7-tetrahydro-5H- thiazolo-[3,2-a  pyrimidine derivatives.
Patent KR-840000538-B1 (KR)
Title: Gripping device
Inventor: IBANA HAJIMU
IPC: B25J19/02
Filed: 1981-07-22
Granted: 1984-04-20
Abstract: The device includes fingers(10,11) for gripping an object and an optical system for snesing the object to be gripped. The optical system includes light-emitting members(16a, 17a) for generating light beams that cross at predetermined angles, and light receiving members(16b, 17b) for receiving the light beams. These members are so arranged that when the gripping device in use, the position of the object may be sensed in response to interception of the beams by the object as relative movinemt takes place between the device and object. Pref. a control device is responsive to the output signals of the light receiving members to move the gripping device so as to bring the gripping centre of the device into coincidence with the centre of the object.
Patent KR-870002074-B1 (KR)
Title: Cobalt free maraging steel
Inventor: FLOREEN STEPHEN
IPC: C22C38/00
Filed: 1981-10-29
Granted: 1987-12-03
Abstract: This invention relates to cobalt free maraging steel which have excellent strength and toughness.  The characteristic composition of this maraging steel is Fe-(16.5-19.5wt.%) Ni with addition of Mo, Ti, Al and carbon in the range; 0.5-4wt.%, Mo, 1.25-2.5wt.% Ti, 1wt.% Al (maximum content), 0.05wt.%C (maximum content) and impurities.  (If Mo wt.% is less than 1.5wt.%, Ti must have more than 1.8wt%. and if Ti wt.% is less than 1.4wt.%, Mo must have more than 2.25 wt.%).
Patent KR-880001003-B1 (KR)
Title: A cathode ray tube
Inventor: SATO HIROKI
IPC: H01J29/72
Filed: 1981-11-24
Granted: 1988-06-10
Abstract: A flat cathode ray tube comprises an evacuated envelope having a transparent flat bottom; a fluorescent target on the inner flat surface; an electron gun laterally spaced from the target, emitting an electron beam parallel with the flat surface; and three deflectors for the electron beam providing horizontal and vertical scanning and beam focusing.  The deflectors comprise the target and an opposed electrode in the envelope, causing beam passing between them, connected with the opposed electrode of the electron gun anode respectively, with a vertical deflection signal applied to plates to deflect the beam.
Patent KR-860000104-B1 (KR)
Title: Process for preparing 2-pyridine carboxamide derivatives
Inventor: TAKEDA MIKIO
IPC: A61K31/4427
Filed: 1981-12-04
Granted: 1986-02-19
Abstract: N-(5-Tetrazolyl) pyridine-2-carboxamide and derivs. (I) and their salts are new (where R1 = H, a lower alkyl, a lower alkoxy, halogen, a lower alkylthio or NO2; and R2 = H, a lower alkyl, a lower alkoxy, PhO, Ph-(lower) alkyl, Ph'-(lower) alkenyl or halogen). Cpds. (I) are antiallergic agents with low toxicity (e.g. LD50 of 800 mg/kg orally) and no tolerance or side effects are observed with repeated use. Dose is 0.1 - 300 mg/kg daily. Cpds. (I) in which (a) R1 is H and R2 is Me or styryl, (b) R1 is 4-Cl and R2 is H or Me, and (c) R1 and R2 are Me, are specifically claimed.
Patent KR-910006485-B1 (KR)
Title: Picture image signal recording apparatus
Inventor: NAKANO KENGI
IPC: G11B5/09
Filed: 1982-11-29
Granted: 1991-08-26
Abstract: A method and apparatus for recording and reproducing an information signal comprised of a video signal and an audio signal in a plurality of successive parallel tracks on a magnetic tape, each track including a first audio section followed by a video section, by converting the audio signal into a PCM digital audio signal; compressing the PCM audio signal; frequency modulating the compressed PCM audio signal to produce an output PCM audio signal; and recording the output PCM audio signal and the video signal in the plurality of successive tracks such that one field interval of the video signal is recorded in the video section of each track and the output PCM audio signal corresponding to one field interval of the video signal is recorded in the audio section of each track and corresponds to the video signal in the leading portion of the previous successive track and the video signal in the trailing portion of the previous alternate track, wherein the audio signal recorded in each track is delayed by a maximum of 1.5 field intervals from the video signal to which it corresponds.
Patent KR-870001557-B1 (KR)
Title: Dc motor
Inventor: OHONO HIRODOSI
IPC: H02K3/26
Filed: 1983-06-27
Granted: 1987-09-02
Abstract: The invention relates to a D.C. motor having a rotor as a permanent magnet and a corresponding stator as a printed board driving coil on both sides.  Therefore it is possible to make coil parts thin and simultaneously make air gap size small.  The D.C. motor has a simple structure and minaturization with high torque charateristic. Especially the printed board driving coil of a round-form has no conjunction.  And the permanent magnet is arranged to be a ring type with phase difference 90  in electrical angle to the tooth of the comb form driving coil.  Another charateristic is the low moment of inertia and increused linkage flux of the rotor magnet.
Patent KR-900005370-B1 (KR)
Title: Process for preparing sulfonylureas
Inventor: FORY WERNER
IPC: A01N47/36
Filed: 1983-09-08
Granted: 1990-07-28
Abstract: N-Pyridyl sulfonyl-N'-pyrimidinyl and -N'-triazinyl ureas of formula (I) are prepd. by reacting a pyridyl sulfonamide cpd. of formula (II) with a cpd. of formula (III) in the presence of base. In the formulas, A= C3-6 alkynyl, substd. C-16 alkyl, C2-4 alkenyl substd. by C1-6 alkyl or phenyl opt. substd. by halogen, CN, NO2, C1-4 alkyl, amino or carbamoyl; E= methine gp. or N; R1= H, halogen, C1-4 alkyl, alkoxy, haloalkyl or haloalkoxy, C1-5 alkoxyalkoxy or C1-5 alkylthio; R2= C1-3 alkyl or alkoxy substd. by halogen; R3= H, halogen or amino; X= O, S sulfinyl or sulfonyl. (I) are useful as selective herbicides.
Patent KR-890000206-B1 (KR)
Title: Apparatus and method for sealing capsules
Inventor: WITTWER FRITZ
IPC: A61J3/07
Filed: 1983-10-14
Granted: 1989-03-10
Abstract: A sealing liq. of alcohol and water is employed to lower m.p. of gelatine.  A method comprises (i) applying the sealing liq. to overlapped part between gelatine capsule body and cap, the sealing liq. percolating by capillary action, (ii) eliminating excess sealing liq. to dry capsule surface and (iii) locally heating overlapped part while the sealing liq. remaines for complete sealing at above m.p. of gelatine.  Heat energy e.g. may be laser, electron radiation (2.4 GHz, 200v/cm), 1R heating, convection heating, conduction heating of 170-180 deg.C or ultrasonic vibration.
Patent KR-880001095-B1 (KR)
Title: Process for preparing solid pharmaceutical composition of active vitamins d3
Inventor: MAKINO YUJI
IPC: A61K31/59
Filed: 1983-11-25
Granted: 1988-06-29
Abstract: A compn. for solid pharmaceuticals of vitamins D3 with improved stability comprises an outer layer of active vitamins D3 and an excipient such as PVP, readily sol. in an org. solvent, around an inner layer comprising an excipient such as cellulose, slightly sol. in an org. solvent.  Thus, a compn. contg. 1α-hydroxycholecalciferol (I) 1mg, PVP 10g and cryst. cellulose 30g, kept in storage at 4≰C contained 98% (I) after 90 days compared to none for control.
Patent KR-910008005-B1 (KR)
Inventor: DAKEGAWA YUUJIRO
IPC: D03D47/38
Filed: 1983-12-13
Granted: 1991-10-05
Abstract: 내용 없음.
Patent KR-910002807-B1 (KR)
Inventor: KUMANO SHINGI
IPC: G10C3/12
Filed: 1984-01-20
Granted: 1991-05-04
Abstract: 내용 없음.
Patent KR-870001958-B1 (KR)
Title: Process for preparation of solution of lactic acid salts of piperazinyl quinoline-and piperazinyl-azaquinoline-carboxylic acids
Inventor: GROHE KLAUS
IPC: A61K31/535
Filed: 1984-09-15
Granted: 1987-10-23
Abstract: New solns. of the lactate salts of piperazine derivs. of formula(I) or (II) contain at least one non-precipitating acid (III), opt. together with conventional additives. X=N, CH or CF; Z=O or CH2; R1=H, Me, Et or CH2CH2OH; R2=cyclopropyl or Et; R3=H, Me or Et.  The solns. are useful for treating bacterial infections by injection or infusion.  Thus, an injectable soln. contains 1cyclopropyl-6-fluoro- 1,4-dihydro-4-oxo-7-(1-piperazinyl) quinolinone-3-carboxylic acid monolactate 1.27, 90% lactic acid 1.45, 2M NaOH 1.80, and mannitol 1.37g in H2O to 100ml.
Patent KR-850001796-B1 (KR)
Title: Process for preparing carbostyril derivatives
Inventor: BANNO KAZUO
IPC: C07D401/02
Filed: 1984-10-06
Granted: 1985-12-21
Abstract: The new carbostyril derivs. (I) and their salts (R1=H, alkyl, phenyl alkyl, alkenyl or alkynyl; A=CO, CHOH, CH/CR2 or CH2CHR2; B=alkylene;  l=1 if A=CO) or CHOH;  l=2 if A=CHCR2 or CH2CHR2; Z=NR3; or CR4R5; R2=H or alkyl; R3=pH. (substd. by 1-3 of halo, alkyl, alkoxy, alkoxy carbonyl, alkylthio or alkonyl. alkanoyl, HCO2, OH, NO2, NH2, CH), alkylenedioxy ph., ph. alkyl or 1,2,3,4-tetrahydronaphthyl; R4=ph. (substd. by 1-3 of halo, alkyl or alkoxy or by one alkylenedioxy), ph. alkyl, 1,2,3,4-tetrahydronaphthyl or the (II); and (R5=H, OH, alkanoyl) were prepd. by reacting a haloacyl carbostyril with piperazine, piperidine etc. (I) have antihistamine activity.
Patent KR-880002415-B1 (KR)
Title: Process for the preparation of a-l-aspartyl-l-phenyl alanine alkyl ester
Inventor: LEE HYON-JAE
IPC: C07K5/06
Filed: 1985-01-31
Granted: 1988-11-08
Abstract: Dipeptide esters of formula, NH2CH(CH2COOH)CONHCH(CH2C6H5) CO2R. [(I), R=C1-3 lower alkyl  were prepd..  Thus, L-aspartic acid in H2O was reacted with aq. 20% Na2CO3 soln. for 30 min at pH of 6.5-6.8 to give 98% corresp. Na L-aspartic acid-β  -carboxylate, which was reacted with CCl3C(O)Cl in dioxane to give 91% corresp. L-aspartic acid N-carboxylic anhydride.  The anhydride was condensated with L- phenylalaninemethyl ester in dioxane and 5% CuClacetonitrile for 30min, and worked up to give 80% (I) (R=Me). (I) are used as a low- calorie sweetener.
Patent KR-910006030-B1 (KR)
Inventor: ZIEMIANSKI JOHN P
IPC: C22C38/00
Filed: 1985-03-16
Granted: 1991-08-09
Abstract: 내용 없음.
Patent KR-900007130-B1 (KR)
Title: Subscriber of telephone system for providing multiple speech and/or data signals
Inventor: PANETH ERIC
IPC: H04L65/00
Filed: 1985-11-11
Granted: 1990-09-29
Abstract: In a digital telephone system when plural signals, received simultaneously over speed lines, are processed and sent out over a raido channel, the signals are smapled and digitised before the samples are compressed in a compressor. Channel controllers coupled to the compressor combine the compressed digital samples to a sequential bit stream with a repetitive slot per compressor channel. A remote central unit responds to a connection request signal to deliver a slot signal to show when the sampler-converter is coupled to the speech line. It associates the slot of the relevent line by use of stored association data which is interrogated to make the required connection. A call unit coupled to the central enables the sampler-converter indicated by the central unit.