BE429534A - - Google Patents
Info
- Publication number
- BE429534A BE429534A BE429534DA BE429534A BE 429534 A BE429534 A BE 429534A BE 429534D A BE429534D A BE 429534DA BE 429534 A BE429534 A BE 429534A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US158464A US2179106A (en) | 1937-08-11 | 1937-08-11 | Secrecy signaling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE429534A true BE429534A (en) |
Family
ID=22568249
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE429534D BE429534A (en) | 1937-08-11 | ||
| BE516088D BE516088A (en) | 1937-08-11 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE516088D BE516088A (en) | 1937-08-11 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2179106A (en) |
| BE (2) | BE516088A (en) |
| CH (1) | CH225897A (en) |
| FR (1) | FR841895A (en) |
| GB (1) | GB516088A (en) |
| NL (1) | NL64998C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595712A (en) * | 1943-08-02 | 1947-12-15 | Comm Engineering Pty Ltd | Multi-channel telephone systems |
| US2490022A (en) * | 1943-09-08 | 1949-12-06 | Tung Sol Lamp Works Inc | Secret signaling system |
| BE459652A (en) * | 1944-05-08 | 1945-09-29 | ||
| BE473802A (en) * | 1946-08-20 | |||
| US2535442A (en) * | 1949-07-26 | 1950-12-26 | James L A Mclaughlin | Heterodyne eliminator communication system |
| US2609535A (en) * | 1950-02-06 | 1952-09-02 | Padevco Inc | Multiplex frequency modulation system |
| US3011026A (en) * | 1956-05-28 | 1961-11-28 | Zenith Radio Corp | Signal-translating apparatus |
-
0
- BE BE429534D patent/BE429534A/xx unknown
- BE BE516088D patent/BE516088A/xx unknown
- NL NL64998D patent/NL64998C/xx active
-
1937
- 1937-08-11 US US158464A patent/US2179106A/en not_active Expired - Lifetime
-
1938
- 1938-07-12 GB GB20663/38A patent/GB516088A/en not_active Expired
- 1938-08-08 FR FR841895D patent/FR841895A/en not_active Expired
- 1938-08-11 CH CH225897D patent/CH225897A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH225897A (en) | 1943-02-28 |
| NL64998C (en) | |
| FR841895A (en) | 1939-05-31 |
| BE516088A (en) | |
| GB516088A (en) | 1939-12-21 |
| US2179106A (en) | 1939-11-07 |