REF ID:A363272 

In re Application ot 

William 1. J'rie4man 

Serial No. 549,086 

1ile4; August ll., 1944 

J'ort ELEC1'RICAL SYSTEM 

Division 44 

The Honorable Comaiaeioner ot Patents 

W'aahington 25, D. O. 

Si:rl 

Thi• ia in reaponae to the tina1 :rejection ~ 13 April 1956. Plea•e amend 

the ca.a• u :f'ollova1 

mm OLA.OOs 

Cancel clai• a, 5 tbl'Ougb 7; and 11. 

Ol&im 10, line 2, cancel nad&pte4. to be". 

line 3, after "rotoran insert - in a plurality ot p&rallel o:l.rcuita 

each including 1aid source or current .... 

line 3, atter "connected" inaert • tor energisation ... 

line& J., and 5, cancel 11& plunger ..... sa.14 rotore, ". 

line 6, canael "a" ud in•ert .. the ... . 

line 6, &tt•r ttone" inafirt ... relative~ invariable .... 

line 7, after the co-. insert ... an a.dclitional nornally open avitch, 

mean• for stepping a. rotor,". 

line 8, cancel "adapted to belt. 

line 8, eancel. nplunge:r'* and insert - l&at mentioned. meana .... 

"' line 9, cancel. "asaooiate4 with u.14. outpuiJtt and in.•rl .. or ..U. 

other atat:lone.ry con-taet -: -=--

M.d the following claims 

25. In & ceyptograph including a source ~ current, a plurality ot indicating 

d.evicee, a noral.ly open niteh tor each a&:l.cl indicating device, and a plurality 

or variable electric pat1- interconnecting said ind.icating devices in p&ira, two 

circuit• closable by each said avitch, one including aai4 aource ot current, •aid 

laat-mentioned h'itch, and the said. indicating device thereof', and the other 

including said •ource ot current, A.id la8t-mntioned aitch, the said indicating 

device thereot, one ot said variable pe.tha, and the interconnected said. indicating 

device. 

l!\pproved for Release by NSA on 07-23-2014 pursuantto E.O. 1352a 
._, ;&t-ffe-- iii<-~_ ..... ;;: __ ,__ ___ .....-; ••~;:::;.~ ... =============~=-=--====-=-=-""'--....... 

.... _.,.. ___ ....,,.._,.,.,.... _______ _ 

/ 

~--

REF ID:A363272 

lmo!ARKSI 

AlthOugh the Patent ottice action ot 13 April ;1.9;6 vu termed a f'in&l reJeotion, 

it is reque1ted that the cue be reconsidered. in the light ot this amendment • 

.Aa a. •tter of tact, the ExamJner•a concluion that an iaaue baa been reached 

appe,~ not to be supported by the final rejection or claims 2 and 10 (long 

si,riQe bel4 to be allowable) on a. ground never before raised. against them • . ; 1} 

/ i s;:cc·.~.,/£=,;~""'-

lJ, , 1.t!he present amindllent :ll directed to the •ubjeota uatter at elaillll 2 and 10 /,.;;,,J....=-e·,~~ -· ..... • .. - - I . 

only.. Because it appeared a.vltw&rd to amend claim. a in the- reapecta mentioned 

by the Examiner, that cl.&bl ia hereby aanaelecl, and the 1ubatance tbereot 19 

embod.ied in nav claim 25. W:tthoUt departing trom the concept or claim 2, the 

new claim, after reciting the variou• element• at pbyaical. structure, elearJ.7 

- aeta forth the tvo kinda ot c:trauitl involved in thct claim and spec1ticall)" 

includes the •ource ot aur:rent in each. 

A.a amended., claim 10 also includes the •0t1r.ce ot current in the circuit& 

4eac:ribed. Further, &11 alternative expre•aiona have been deleted. !t appea~ 

that misunderatand.ing ex:teta as to the authentiu.t1ng 'function ot tho c:eyptograpli, 

~ in thia reapeot attention i• directed. to pagea 9 and 10 or the apecitica.tion. 

J'rokl1 the deacription, it vill be under•tood tbat authenticating 1• accomplished. 

not vith the rotor mue in ita condition •• ot tho tin&l character ot an enciphered 

mea1age,, but, instead, with the mue in the next aucaeecling condition. ~is me.m. 

tbat, atter the completion ot a ••a&ge proper, one 1 tvo, three, or tour roto:ra 

vill be atepped. betore the authentication operation. 

Accord.:!.ng to the applicant•• inven'tion, authentication 1• aceom,pli1hecl u an 

automatically-oacurring af'terath ot & stepping operation :tollaring completion 

ot a meaaage, and require• no Qperation ot a.ny keyboard key. 
~-=--- ---~------=----o---==~------~-~-~-- -~-~------ --~~~-- -----~--=--~------=------ ----------0-- --~ ---- --

REF ID:A363272 

To put it otherwiae, a. desired mesaage i9 enciphered. to completion in nord.1 

f'uhion.. SYitch 23 is then tb.rovn to its "authenticate" position, and plunger 

38 .. 39, depre11ed. Thi• laat-mentioned action vill atep one or mot"e rotors and 

close the "E" eneipher.ment circuit, excluding, hovever the "E" indicator, and 

a. aine;le indicator will thereupon be lighted.. Obvioualy, some letter other tba.n 

"E" could be uti1i&ed., but, once selected, the choice is not rttad.:tly variable.-

Except u above explained., all rejected claims have been canceled. 

Allowance is reque•ted.. 

Respectfully, 

WILLIAM !'. FRIEDMAN 

i1a Att"orney