BE351858A - - Google Patents
Info
- Publication number
- BE351858A BE351858A BE351858DA BE351858A BE 351858 A BE351858 A BE 351858A BE 351858D A BE351858D A BE 351858DA BE 351858 A BE351858 A BE 351858A
- 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)
- Mobile Radio Communication Systems (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20671/27A GB299915A (en) | 1927-08-05 | 1927-08-05 | Improvements in secret signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE351858A true BE351858A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=10149730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE351858D BE351858A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1927-08-05 |
Country Status (6)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2132205A (en) * | 1937-06-23 | 1938-10-04 | Bell Telephone Labor Inc | Secret transmission |
| EP0139496B1 (en) * | 1983-09-30 | 1990-05-23 | Nippon Telegraph And Telephone Corporation | A radio transmission system for a phase modulation signal |
-
0
- NL NL24066D patent/NL24066C/xx active
- BE BE351858D patent/BE351858A/xx unknown
-
1927
- 1927-07-06 US US203703A patent/US1725032A/en not_active Expired - Lifetime
- 1927-08-05 GB GB20671/27A patent/GB299915A/en not_active Expired
-
1928
- 1928-05-22 DE DEI34457D patent/DE540782C/de not_active Expired
- 1928-06-13 FR FR655685D patent/FR655685A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR655685A (fr) | 1929-04-23 |
| DE540782C (de) | 1932-01-07 |
| US1725032A (en) | 1929-08-20 |
| NL24066C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| GB299915A (en) | 1928-11-05 |