~--SIFICATION (I/cm11) 

DISPOSITION FORM OOMFIBEfffiAL 

FILE NO. I SUBJECT 

TO: DD/CSEC FROM: 

THFW: DIR/PROD~ 

Mr. Stauffer 

Patent Attorney 

DATE 30 July 1957 

60433/lcs 

COMMENT NO. 1 

1. The subject application for patent, covering the SIGFOY, or M-325 

Converter, was filed as a ConfidentiaJ. case many years ago, and has retained 

that classification since. 

2. The application is now in allowable form, and a patent will issue if 

classification is, in fact, no longer necessary. 

3. The case has been under a so-called Patent Office Secrecy Order. In 

accordance with the provisions of NSA Regulation B0-1, your views are requested 

as to the advisability of reconnnending the lifting of the Secrecy Order so that 

a patent may issue. 

4. In addition to the application itself, other papers"involved in the 

prosecution in the Patent Office are inclosed. In the event the Secrecy Order 

is lifted, the materiaJ. occurring in all of these papers will become available 

to the public. 

5. We are not under any special obligation to lift the Secrecy Order. 

The case is at present the property of the Government. It ·will revert to the 

inventor (subject to a free license) upon aJ.lowance and issue. 

FOR THE DIRECTOR OF RESEARCH AND DE/MFJ!/T:':'l/;:: /,/,,/ 

~r- NSA Patent Attorney -----------------------------------------------------------------------------------

TO: DD/CSEC FR.CM: ACTG DIR PROD 28 Aug 57 COMMENT NO. 2 

Ext 333/ob 

l. There is nothing in the final form o~ ~atent Application No. 549086 

(SIGFOY) or in the correspondence on allowable claims which requires that these 

papers presently come under the Secrecy Order. All points discussed or illustrated 

are either in the public domain or are circuit or switching elements which while 

novel from a patent standpoint involve no aspect of security from a disclosure 

standpoint. 

2. It is recommended that in this case the Secrecy Order be lifted. 

a~~ A. G~ov ACTG DIB 

Incl: n/c 

16-54801-3 U. S. GOVERNMENT PRINTING OFFICE 

roved for release b NSA on 07-23-2014 ursuantto E.O. 1352 
Applicat.icn !or 1 atent Sol".. No • .549086 

a Mr. ste.ut.ror 30 Juq 19.S? 

i·.tent. A.ttomor 60433/lcs 

l. Tho s.Jbject. ap liCd.ti.Qft for pa.tout., eovent-,g the ~lGFOY, oi- ! ... 3:::5 

ec.w>Jrte:-,, wao .tiled. as a Cori..i'idontial. case ~ 10.a.r.; ago., ~a. baa retained 

tt-$ classi.t'ic.J.ti.on &11'lco. 

2. h a~pllcat1on i:J now ia a.llownblo ror::i, and a patent 'Will issue it 

classiticati.Cll .t.s. in tact. no J4\:er necessary. 

3. The C!lSe has been under a so-Cill.le<i ;."a.tent Ottice Secrecy order. .In 

&CCOl'WlllCO wlt.h tho ~0113 of .h5A .Regul.atiQll so-1, 7QUr views are requested 

u t,o the ati'Y1eabll:1t:r of nco:c.er.dln8 the l.Ut.int: or the Secrcq \.f't"dcr so that. 

a ~ter.t ::;q iasuo. 

4. ln adoit.ian to the application itself,, other p&lJ&rs involved 1n the 

: .rosecut.1.cn in tho Pat.ant, otl1C$ are :lnclosoo • :In tho event the :,ocroey- Orde~ 

is littcd, tba material occurri,nz in all of these papers will beco:m av-a1la.ble 

to the public. 

~. \'le &r0 not UtlC.Cr ar(j 8.tJGCiaJ. Obli..,ation to lif't t.bo Secrecy v'l"<ier. 

1'he caao is at. l.1re:cnt tho property of tho Govern.amt.. lt. will revert. t..o "the 

:J.rmmtor (subject to a rree license) upon .:Uowanco and iasue. 

ivii. Tn.:. I ID~ 0F 't.63:;.mCH t~'D DEV!.LOPl-a-T: 

cc; R/D Reading File 

Dm/PROD ,_.,,-

NSA Patent Attome1'.,......... 

CONFIDENTIAL 
~ - -- ---~~~~~~~~~~~----------------------........... __,.~.---l~lJ~iR-~~~A36ae~a:­ -...,ee1e.'*ifiHiffi'FFI'BBE1~11ailF.ei1=!:E;A'Y:,:i;.....-

TO: NSA Pa.tent Attorney F.ROU: CSEC SUBJECT: AppJ.:Lcation f'or Patent Ser. No.549086 

(:Mr. Henry B. Sta.uf':f'er) DATE: 1 6 SEP 1957 COMMENT Im. 3 

J1f.ffu1bert/DOC-1/60440/1c 

The descriptions of the cryptographic principJ.es enq>J.oyed in the M-325 are 

ava.J.J.abJ.e to the public as a resuJ. t of six patents issued to :Messrs. Hebern, Korn and 

Scherbius. The Secrecy Order f'or patent app1ication No. 549086 no 1onser serves its 

intended purpose of restricting dissemJ.nation of' u. s. Cr;yptographic :information. 

Disclosure of the :information contained therein wtll not jeopardize the security of u.s. 

Communications. It is, therefore, recommended that in this case the Secrecy Order be 

lifted. 

IncJ.: 

n/c 

-._ 

·- Jf Jr * l' 

-2-

MANN HAMM 

Captain, USN 

De11uty Director of 

Commun1c:at1ons Security I