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SIOIAL CORPS PATEL1T BOARD 

.April 17, 19J6. 

I. 1. The Board Mt at 2s30 ?. M., this date, in Roollll J4J;, ~un1t1ona Building. Preaenta All raambera. 

~. The !'urposo of th1J meeting was t!> take action nnd :aske 

the necessary recom:aendationa rlth reference to inventionn of 111111.o.!11 

F. Friedtian. Said inventions relate to improvements or ~od1!1cationa 

in moehnni.cal cipher devices, "Converters 11-lJ~-Tl and ?1-134-T-2". 

3. The Boa.rd finds thati 

,:,;.,. The invention 'Jf" ::fr. ?:riedQ.!!n \.!overing .:?.. modif1~at1on in 

Converte1· tT:.'':i U-1'.M.-Tl .i3 a :aodificatfor: o!' ;1n inventi:}n .-,f !!eo::Jrl). 

Silliaai F. ll"r.i.ed!D:m !tn<l Ge.'lrge A. Gr~ham, ?at2nt f.2,028,772 (J.1'm.IP.U .. J 2:3, 

19J6). 

.2• 'l'he patent referred to above m.i.s granted by the Soai;)l1S3ioner 

of ?atents under authority contained in Section 1,3~6 of the Revised Statutes 

a.nd that thei War Department was given a non-axolusive license thereto and 

that the 7/mr Departl!lent did not request a c:omplete assignment.. 

S.• The Bos.rd recommends: 

(l) That the action ?roposed 0-..t ::r. F::::-iecta:an in ;>angraph 

2 of M.3 :nemorancum. of ~reh 24, lJ.36, to Research <:.nd Development Di visl,;}n (':'RF.OUGB ~ar ?lan'.:3 ;mi Training Di ·.rision) be 

approved, and that :!r. Fri"3dman be instructed to submit 3peci.f'1ca.tionl'I to t~e Patent Section for the n~ceS9Sl7 action i'l'itb 

a view to obtaining Lettera ?stent. 

(2) Th~t the invention be not con51dered i.!epor"..l!~t in the 

National Defense, and that a non-exolus1vo license to the 

Government, in writing, be required. 

II. l. The Boe.rd finds that: 

!!.• The invention ot :tr. Friedman covering mod1.f1eat1ons in a 

ci?her device known a.s, "Converter ¥-1.Jl.-'1'2, covera improveieenta in a 

device now being prosecuted under patent application ,7682,096, and under 

which several cla.imn have been al.lowed. 

1?• ihereas, the original invention wa3 not considered of such 

aport&noe aa to be plaow in the category '11.hich provides !or its being 

kept secrat, the improvements described in the description accompanying 

his memorandum of Yarah 23, 1936, to Research ~nd Develo:tl!lent Division, 

through War Pl.and and Training Division, are considered as, •Ia1;ortant in 

the Nation.al Defense0 • 

JA'pproved for Release by NSA on 11-22-2013 pursuant to E.O. 1352§ 
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.9.• The Board reoomendsa 

(1) '!bat tbe applloat1on for patent cover111g aod1f1ce.Uon 1n 

Converter 1-~T2 be prosecuted mi4eJ' the provia1on or Section 

4886 ot the a.deed St&tuteaJ 

(2) That, under the proviaiona of paragraph 6 a, AR 8SO-SO, 

Deoeaber :u. 1934, a complete asaignaent be reque.-ted, aDd, 

(.3) ·Th&~ the invention be kept secret • 

Boger B. Colton, 

Lieut. Col., Signal Corps, President. 

w. s. Rumbaugh, 

Major, Signal Corps, 

Member 

George r. Sack, 

Captain, Signal Corps, 

.ilember. 

Walter c. Ellis, 

Major, Signal Corps, 

Recorder. 

J. B.. Alllaon, M~jo:r Cel16l'al, 

Chief Signal Officer o! tho Arst• 

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SIGNAL CORPS PATE.NT BOARD 

MEE.TING NOo 2 

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April 17, 1936 

I. l. The Boa.rd mf:it at 2:30 P. M., this datc 11 in Hoom 3435, 

Munitions Building. Present: All members. 

2. Tho purpose of this meeting was to take action and make 

the necessary recommendations with reference to inventions of William 

F. Friedm<i.n. Said inventions relato to improvements or modifications 

in mechanical e1pher devices, "Converters U-134-1)· and M-134-T-2n. 

3. The Board finds thati 

~ a. The invention of Mr. Friedman covering a modification in 

if'" bonverter-type :.\it-1.34-Tl is a modificatlon of' an invention of Messrs. 

, _

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_./ .... l\ \William F. Friedman and George A. Graham, Pe.tent #2,02S,772 (JA.nua.ry 28, 

•fJv~ I 1936) • 

,X ") 

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"c, .B.• The patent referred to above ~as granted by the Com.~issioner 

of Patents under authority contained in Section 4886 of the Revised Statutes 

und that tho War Department was given a non-exclusive license thereto and 

that the War Department did not request a complete assignment • 

.£• The Board recommends: 

(1) That the action proposed by Ur. Fried:nan in paragraph 2 

of his memorandum of March 24, 1936t to H.csourch and Development 

Division (THROUGH War Plans and Training Division) be ap~roved~ 

and that Mr. Friedman be instructed to submit specifications to 

the Patent Section for the necessary action ~1i th a view to obtaining Letters Patent. 

(20> That the inv~ntion be not considered important in the 

National D~fenso, and thnt a non-exclusive license to the 

Government, in writing, be required. 

II. 1. The Doaril finds th.:i.t: 

a. The invention of Mr. Friedman covering modifications in a 

cipher deVice known as "Converter M-134-12~ covers improvements in a 

device now being prosecuted undor patent application #682,096, and under 

which several claims have been allowed. 

].. ~horeas, the original invontion was not considered of such 

importance as to be placed in the categor) which provides for its be1ng 

kept secret, tho improvements de3crtbed in the description accomynnying 

his memorandum of ~arch 23J_]..936, to Hescarch and Developmont Division, 

through Var Pl..ins e_nd Training Division, are c-0n:3idered as, 11 Im:;:>ortant in 

tha National Defensen. 
REF ID:A521723 

.Q.o 11'he Board recommends: 

(1) Th~t the upplic.';ltion for pa.tent covering f!lodificA<tion in 

Convertor M-134-T2 bo ?roeecuted under the provision or Sectlon 

4886 of the Revised Statutes; 

(2) That, undor the provisions of parsgrkph 6 1 Al~ 850y50, 

December 31, 1934, n complete assignment be re4uested, and, 

(J) That the invention bo kept secret. 

Ro1;:er B. Colton, 

Lieut. Col., Signel Corps, 

President. 

W. S., Ru.'Ilbough, 

Major, Signal Corps 1 

Member 

APPHOVE.'D; 

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Goorgo I. B'lck, 

Captain, Sign~l Corpsp 

Member. 

Walter C. Lllis, , fl.9.Jor, Sign.11 Corps, r' 

Recorder. 

! 

J .. B. AlliAon, 

Major General, 

Chiof Gignql Officer of the Army. 

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