CH586489A5 - - Google Patents
Info
- Publication number
- CH586489A5 CH586489A5 CH722572A CH722572A CH586489A5 CH 586489 A5 CH586489 A5 CH 586489A5 CH 722572 A CH722572 A CH 722572A CH 722572 A CH722572 A CH 722572A CH 586489 A5 CH586489 A5 CH 586489A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR717118151A FR2138208B1 (cs) | 1971-05-19 | 1971-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH586489A5 true CH586489A5 (cs) | 1977-03-31 |
Family
ID=9077306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH722572A CH586489A5 (cs) | 1971-05-19 | 1972-05-16 |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE783554R (cs) |
| CH (1) | CH586489A5 (cs) |
| DE (1) | DE2223861C3 (cs) |
| ES (1) | ES402899A1 (cs) |
| FR (1) | FR2138208B1 (cs) |
| GB (1) | GB1337101A (cs) |
| IT (1) | IT1001487B (cs) |
| ZA (1) | ZA722858B (cs) |
-
1971
- 1971-05-19 FR FR717118151A patent/FR2138208B1/fr not_active Expired
-
1972
- 1972-04-28 ZA ZA722858A patent/ZA722858B/xx unknown
- 1972-05-11 GB GB2213072A patent/GB1337101A/en not_active Expired
- 1972-05-16 DE DE2223861A patent/DE2223861C3/de not_active Expired
- 1972-05-16 CH CH722572A patent/CH586489A5/xx not_active IP Right Cessation
- 1972-05-16 IT IT24366/72A patent/IT1001487B/it active
- 1972-05-17 BE BE783554A patent/BE783554R/xx active
- 1972-05-18 ES ES402899A patent/ES402899A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE783554R (fr) | 1972-11-17 |
| ES402899A1 (es) | 1975-04-16 |
| DE2223861A1 (de) | 1972-12-07 |
| ZA722858B (en) | 1973-04-25 |
| GB1337101A (cs) | 1973-11-14 |
| IT1001487B (it) | 1976-04-20 |
| DE2223861C3 (de) | 1979-01-11 |
| FR2138208B1 (cs) | 1973-05-11 |
| DE2223861B2 (de) | 1978-05-03 |
| FR2138208A1 (cs) | 1973-01-05 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |