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Frail: 

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Bureau or l':ng1near1ng. 

The Judge Advocate General. 

Bubjectt 11.ectric C!pher.tn, •chlne•J request tor opinion concerning patent teatu:rie•. 

Bnclosu.rez (A) Photostat.la cop7 ·or correapomenc.t in con- t,.. 

neotion 'With l).S. Patent application Vo. ~'1\ 'lf'Clis ~ 

t~6'15898 or 10 'll>rll 192J, together with -- ~ ~ oV. l a>.I" • _ --- u.ll.l'&tint:enroa~r1,414,496 am 1,472, ?'rs.A~-~ • \ \o ~ - \ i ~ ------ - (B) Copie11 ot U.S. Patents Ro•. 1,510,4,;l,Y~,-..... . ~\~.::::~ A-'A'~ .... ~~l,6a,,0?2 arid 1,861,857.-,~· ,-... '~r:' j ,\,.. I-{~,,. :--. 

-~~C) Copiea ot u .. s. Patents Jfoa. l,,70S,64l,"'-1i 

l<'.'a-'W...~l,733,886 &J'd l,777,,42S.<-l~._:_- ~..,......, 

(D) copiee ot U.S. Patenta lfos. l,556.964,1 .... ~ 1,584,660 am 1,6S7,4ll. J ...i•~. 

(:S) Cop.y or U.S. Patent lo. 846,105. -- ti' r..e~ (1') Deacript1o11: ot Sleotrio (;l.pher Jrach1ne or . -· .J 

Buen£. dea!.gn with 4 blueprinta. 

i. l'ol" ~ ;rear• t11a •u ~nt. baa 1 ;tnt.ett~.!.ed- in _the procureiaentot LM..__~1?f.!'1;•~{f ~ 01 er ~chine. It hae!&.tre~a~~e~~-~-=..!._ol _---__, 

ne ~- • _ t:. R;' 6!._rn1 or trie 'ftr1oue cCiipanie~ -- lch he nu been aaaociated. 'l'he aaohine, in it• 

vari.oua aod•l•, ie ot the type deacribod in the patenta 

llated. 1n encloaure (B). The Bureau 1• MW 1n poeeeaaion. ot 

a lat.er .model ot t.hia machine, upon 'Which it 1e umwatood 

·if>rdicatl.on tor patents has been, or ahortll' will be, Wed. 

l!9Jl! or ~e .modela purchll!....«!..~~-~!-~~~Eroven aati1- ·:act.o17~ t<!~ ifl!1!'1 ua•_ f~~t~ou• ~·ona. - _..., "'* -· ·- ..... 

2. F..nclosure (C) :le description or a aahine anufaOtur.td in rrerm&n;r I Onl Jlia1el Of which is :f.n the poaMalliOft 

ot the ~tllent. U.S. Patent l,'n7,42S appeara to cOV'er 

a 811ght]J' ditterent. tn>• ot u.chine but it 1a aaa1gned to 

the CompanJ" which manutaoturea the other and 1e theret'ore 

grouped w1 th thia maoh111e. lnolosure {D) covers a machiD' 

tor which the patent.a have been 1aaued to a different ! .divtd.ual.. Jncloaure (E) 1• Si.111.larq t.wed to a difterait. 1rxliy~ual • 

c 0 p 'f ! 

I ..£--

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Declassified and approved for release by NSA on 09-12-2013 pursuantto E .0. 1352a 

1 - -..I. 
••• • • ~ • ...-.ii'"'.i... 

REF ID:A60595 

4. '!he taot that. :patente have been ieaued to at 

leaat tour ditterent indlv1duale or uaignora., all tor & 

e:bdlar type ot machine, indicates thatJ:n4' ot the e;tents 

et!ei1acover the ~l!!c ;a;nciGl• or e ~ix acli 

Q chine .arr ... Cb!\$ era r; In dit&il, par oulal"q 1n the details ot conatruotion ot the circuit changing drUm8 

and tho aeana bJ' which the7 are actuated. 1be aotuatin& \ 

•an• 1n particular ..,- oaune a ftriot.T ot movements ot tlle ... /,,.. 

dl"UWI witJ\ wideq ditterent C17J>tograph1o :results. However,. vl ..,,· 

the ditterencee appear to be in the utUisation ot the 9~~°''°' \> 

principle rather than irJ the principle itselt. "'°'"·$-o..!. ~o,.. J ~ ffi 

~·,,,,,'\ "'"~' 5. Enoloaure (A) ia a photostatic cop7 ot the appli- ~s.,_ .,,. · 

cation and correspondence tor the patent., l,510,441, which 

·Ur. Hebern corud.dera ba.1110. Cl'!. sheet lS MJ' be tourd the 

.a ti.on ot the e.xard.ner with reapeot to oertain ol.aima llbich 

A,Ppta!'ed to cover tne dr"WD-t.Jpci circuit changer. Aa a reault. 

ot this action the ala.ilia wre aoditied. 'two ot t.he patents r•terred to are included. with the enclo8Ul"'8.. ~e Bureau 

doe• not possess a COP1 or the troch Application Jfo. S26,$88. 

6. Enoloanr• (F) deacribea .m llluat.ratea the design 

or .. Jaehino or tbia t.n• developed by th• Bureau. lhil• :it 

uaea the buic prinoiplt1 ot a rewlvina drul!l, it. ia believed 

thAt the drwl actuating •chaniaa i• entiralJ' original and 

pend. ta a much wider COllbination or drum A0\'811.efttl than MT 

ot the other•. 'Jhe !urtJau 1e contq>latil)£ the construct.ion 

ot a .Q:COdel ot this i:a.cirl.ne and ahould 11. be conat.n.oted and 

prove aa.tiataator.r,· dea,,rea to arranae tor ita -.nutacture and 

eyentv.al 1aaue to the S••rvice. 

tivJ.DBrJAL 
i 

ii: 

REF ID:A60595 

C-867/68 (8-25-119) 

7 • ft m&tr -~. · p>1iUon ~ be clear and a 

buia rorcer.ce oi ~ ue.-oe ·--· ,.m__~ .... tile Buriau rt.:·· 

que•f!a the oplii!on of tlii3 e :voCa.lA- oeneral on th• 

following queat1.one1 

(a) Do ~ ot the ta.tep~•,so1oaed co'ftr tJie_ 'a!91c rple &f tH8 ut.m~y~;~~-or ~Uf' gpg:~~--r~~.~~ . ._ -,, _~an'- !f~~s ~ 

(b) Does th• de11gn d•acr!bed in enclollUl'e (P) infringe on~ or tho patent• l111ted with particular r.ference to 

encloaure (B)f U •o, ta what degree? 

- (o) I• the deaigrl deacribed in enalo1Urt1 (r) patentable? 

It not. 1n its entiretT, j.e the cipher drum aotuatin& mechan1m in :paticul.ar 1 paten1:.able? 

c~to· 

~iet-ot lf&Yal Operations • . ...-...-.. ,. .. -..... .. .... -

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I 

.l. a. Wnnn~ Aqti:nc Chief of Bureau 

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