• REF ID:A67467. 

In Reply Refer to: 

Leg. Pa ts. 

(Friedman & Rowlett) 

Application, S.N. - 70,412 - Cryptographs 

Wm. F. Friedman and Frank B. Rowlett. 

1. Wm. F. Friedman 1. Attached herewith find copy or 

& Frank B. Rowlett, the latest Patent Office Action of September Sig.Sec.Div. 26, 1942. Thirty-six of the thirty-nine 

c claims in the case were allowed. 

2. There is also attached new sheets 

3a and 5 which should be substituted for 

corresponding sheets in the amendment of 

July 20, 1942. 

3. A copy of the Patent Office letter 

of October 22, 1942, extending the time for 

response until September 26, 1945 is attached. 

Donald K.Lippincott, Lt.Co1. 4

sc, 

SPSLG-3 11/7 I 2 

Attached: Ext. 3702 

COPY 

Cy this R&W 

Cy Pat. Off Action Sept. 26 

Cy Pat. Off. ltr p Oct. 22 

Shts. 3a & 5 (in duplicate) 

• 

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

/ 
/ 

e REF ID:A67467. 

DEPARTMENT OF COMMERCE 

United States Patent Office 

Richmond, Virginia 

October 22, 1942 

Ex parte William F. Friedman 

and Frank B. Rowlett 

Serial No. 70,412 

Filed March 23, 1936 

Cryptographs 

In compliance with the request in the letter of the 

Secretary of War, dated October 2, 1942, this application 

is continued under the provisions of u. s. Code, Title 35, 

Section 37. 

This application will not become abandoned:i;rior to 

the expiration of three years from the date of the last Office 

a. 

action. 

Mr. Robert V. Laughlin c/o Chief of the Air Corps 

/s/ Conway P. Coe 

Commissioner 

Munitions Bvilding, Washington, D. C. 

COPY 
• REF ID:A67467 

DEPARTMENT OF COMMERCE • 

UNITED STATES PATENT OFFICE 

RICHMOND, VA. SEPT. 26, 1942. 

Please find below a communication from the EXAMINER in 

charge of this application. 

William D. Hall, 

Patent Section,, 

Signal Corps, War Dept., Washington, D. C. 

Applicant: 

Ser. No. 

Filed 

For 

William F. Friedman & 

Frank B. Rowlett 

70,412 

Mar. 23, 1936 

CRYPTOGRAPHS 

Responsive to the amendment of July 20, 1942:-

The claims now in the case are l - 39. 

Claims 1 - 20, 22 - 33 and 36 - 39 appear to be allowable. 

Claim 21 is rejected as not clearly setting out the 

invention in "moving the same according to a law", etc. 

Reference to a law is not understood. 

Claims 34 and 35 are rejected because they set out 

merely the use of the apparatus under Foreman 1924 C. D. 47. 

These claims are also rejected since when the steps therein 

receited are performed no change in the character or condition 

of any physical objects is produced. These grounds of rejection are supported by Tallmadge 37 App. D. D. 5904

. Cochl'ane 

v. Deener, 1877 C. D. 242; Smith Engineering, etc. 4 9 c. D. 

762; Sweetland 1922 c. D. 6. 

In the event applicant acquiesces in the rejection of tae method claims, he should cancel all reference to the 

method as though it were being claimed as at page 5,, line 23. 

Page 10, line 9, the slot has not been found. It 

should be given a character and it should be mentioned by character as well as name. 

COPY 

Si!l Offfi'f 

Examiner 
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• REF ID:A67467 ' 

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• REF ID:A67467 • 

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Reapeottulq llUbd.tt.t 

11111• D. Rall 

Attol'M7 tor Jppl:lomnt