BE434230A - - Google Patents
Info
- Publication number
- BE434230A BE434230A BE434230DA BE434230A BE 434230 A BE434230 A BE 434230A BE 434230D A BE434230D A BE 434230DA BE 434230 A BE434230 A BE 434230A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/06—Answer-back mechanisms or circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL528525X | 1938-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE434230A true BE434230A (en) | 1939-08-31 |
Family
ID=19787102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE434230D BE434230A (en) | 1938-05-20 | 1939-05-08 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE434230A (en) |
| DE (1) | DE765799C (en) |
| FR (1) | FR854342A (en) |
| GB (1) | GB528525A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE599440C (en) * | 1930-10-25 | 1934-07-03 | Siemens & Halske Akt Ges | Circuit arrangement for manually operated telegraph exchanges where the same device is used for querying and reading (or taking notes) |
| DE596963C (en) * | 1931-10-13 | 1934-05-14 | Siemens & Halske Akt Ges | Circuit arrangement for manually operated telegraph switching systems with mutual end signaling, in which the end signal is transmitted by a current change in the telegraph circuit similar to the telegraph impulses |
-
1939
- 1939-05-05 GB GB13492/39A patent/GB528525A/en not_active Expired
- 1939-05-05 FR FR854342D patent/FR854342A/en not_active Expired
- 1939-05-06 DE DEI64508D patent/DE765799C/en not_active Expired
- 1939-05-08 BE BE434230D patent/BE434230A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB528525A (en) | 1940-10-31 |
| DE765799C (en) | 1953-05-11 |
| FR854342A (en) | 1940-04-11 |