NL16701C - - Google Patents
Info
- Publication number
- NL16701C NL16701C NL16701DA NL16701C NL 16701 C NL16701 C NL 16701C NL 16701D A NL16701D A NL 16701DA NL 16701 C NL16701 C NL 16701C
- Authority
- NL
- Netherlands
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)
- Transceivers (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US648647A US1542565A (en) | 1923-06-30 | 1923-06-30 | Secret signaling |
| US654803A US1573924A (en) | 1923-07-31 | 1923-07-31 | Secret signaling |
| US681346A US1533311A (en) | 1923-12-18 | 1923-12-18 | Secret signaling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL16701C true NL16701C (en) |
Family
ID=27417815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL16701D NL16701C (en) | 1923-06-30 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE466687C (en) |
| FR (1) | FR585788A (en) |
| GB (3) | GB218282A (en) |
| NL (1) | NL16701C (en) |
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 |
| DE1196713B (en) * | 1962-08-30 | 1965-07-15 | Deutsche Bundespost | Procedure for voice encryption |
-
0
- NL NL16701D patent/NL16701C/xx active
-
1924
- 1924-06-20 GB GB1495124A patent/GB218282A/en not_active Expired
- 1924-06-27 FR FR585788D patent/FR585788A/en not_active Expired
- 1924-06-29 DE DEI24920D patent/DE466687C/en not_active Expired
- 1924-07-23 GB GB1761324A patent/GB226488A/en not_active Expired
- 1924-07-30 GB GB1821624A patent/GB219987A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB218282A (en) | 1925-03-05 |
| GB219987A (en) | 1925-10-30 |
| FR585788A (en) | 1925-03-06 |
| DE466687C (en) | 1928-10-13 |
| GB226488A (en) | 1925-06-25 |