BE381441A - - Google Patents
Info
- Publication number
- BE381441A BE381441A BE381441DA BE381441A BE 381441 A BE381441 A BE 381441A BE 381441D A BE381441D A BE 381441DA BE 381441 A BE381441 A BE 381441A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/38—Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Knitting Machines (AREA)
- Lock And Its Accessories (AREA)
- Storage Device Security (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE615016T | 1930-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE381441A true BE381441A (fr) |
Family
ID=34812891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE381441D BE381441A (fr) | 1930-07-18 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1912983A (fr) |
| BE (1) | BE381441A (fr) |
| DE (2) | DE615016C (fr) |
| FR (1) | FR721499A (fr) |
| GB (1) | GB386676A (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767392C (de) * | 1938-05-21 | 1952-07-31 | Lorenz A G C | Verfahren zur Erzeugung und Aussendung von verschluesselten Nachrichten nach dem Start-Stop-System der Fernschreibtechnik |
| DE767367C (de) * | 1939-05-11 | 1952-06-19 | Lorenz A G C | Verschluesselungseinrichtung zur zeitlichen Vertauschung von Fuenfer-Alphabet-Impulsen |
| DE744693C (de) * | 1941-04-26 | 1944-01-22 | Opta Radio Ag | Zeichengebereinrichtung mit einer Mehrzahl umlaufender als Zeichentraeger bei der Signalgabe dienender Nockenscheiben, die unmittelbar einen gemeinschaftlichen Geberkontakt steuern |
| US2458406A (en) * | 1945-09-28 | 1949-01-04 | Ibm | Ciphering and checking device |
| GB680900A (en) * | 1949-10-05 | 1952-10-15 | Dennis Harold Ward | Improvements in hampers for carboys and other containers |
| US2765364A (en) * | 1950-10-05 | 1956-10-02 | Hagelin Boris Caesar Wilhelm | Keying mechanism |
| US2797260A (en) * | 1952-01-30 | 1957-06-25 | Zenith Radio Corp | Subscription television system |
| BE522193A (fr) * | 1952-08-19 | |||
| US2789159A (en) * | 1953-08-18 | 1957-04-16 | Dreyse Richard | Translating device for transmitting and receiving coded messages |
| US4187393A (en) * | 1955-08-23 | 1980-02-05 | Deweese Eugene R Jr | Key generator |
-
0
- BE BE381441D patent/BE381441A/xx unknown
-
1930
- 1930-07-18 DE DE1930615016D patent/DE615016C/de not_active Expired
- 1930-09-13 DE DE1930666436D patent/DE666436C/de not_active Expired
-
1931
- 1931-07-16 US US551206A patent/US1912983A/en not_active Expired - Lifetime
- 1931-07-17 FR FR721499D patent/FR721499A/fr not_active Expired
- 1931-07-17 GB GB20542/31A patent/GB386676A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE615016C (de) | 1935-06-24 |
| GB386676A (en) | 1933-01-17 |
| US1912983A (en) | 1933-06-06 |
| FR721499A (fr) | 1932-03-03 |
| DE666436C (de) | 1938-10-21 |