BE378566A - - Google Patents
Info
- Publication number
- BE378566A BE378566A BE378566DA BE378566A BE 378566 A BE378566 A BE 378566A BE 378566D A BE378566D A BE 378566DA BE 378566 A BE378566 A BE 378566A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
- G09C3/00—Typewriters for ciphering or deciphering cryptographic text
- G09C3/04—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
- G09C3/06—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member the connections being mechanical
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
- Handling Of Sheets (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB708928X | 1930-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE378566A true BE378566A (en:Method) | 1931-04-30 |
Family
ID=10494207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE378566D BE378566A (en:Method) | 1930-03-29 | 1931-03-27 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE378566A (en:Method) |
| DE (1) | DE568789C (en:Method) |
| FR (2) | FR699759A (en:Method) |
| GB (1) | GB381267A (en:Method) |
-
1930
- 1930-07-30 FR FR699759D patent/FR699759A/fr not_active Expired
-
1931
- 1931-01-07 FR FR708928D patent/FR708928A/fr not_active Expired
- 1931-02-01 DE DEW84978D patent/DE568789C/de not_active Expired
- 1931-03-27 BE BE378566D patent/BE378566A/xx unknown
- 1931-07-24 GB GB21249/31A patent/GB381267A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR708928A (fr) | 1931-07-30 |
| FR699759A (fr) | 1931-02-19 |
| GB381267A (en) | 1932-10-06 |
| DE568789C (de) | 1933-01-25 |