FR2220939B1 - - Google Patents
Info
- Publication number
- FR2220939B1 FR2220939B1 FR7407508A FR7407508A FR2220939B1 FR 2220939 B1 FR2220939 B1 FR 2220939B1 FR 7407508 A FR7407508 A FR 7407508A FR 7407508 A FR7407508 A FR 7407508A FR 2220939 B1 FR2220939 B1 FR 2220939B1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
- H04L25/12—Compensating for variations in line impedance
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2310940A DE2310940C3 (en) | 1973-03-05 | 1973-03-05 | Circuit arrangement for connecting telegraph subscribers to AC transmission equipment and switching systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2220939A1 FR2220939A1 (en) | 1974-10-04 |
| FR2220939B1 true FR2220939B1 (en) | 1977-09-23 |
Family
ID=5873867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7407508A Expired FR2220939B1 (en) | 1973-03-05 | 1974-03-05 |
Country Status (12)
| Country | Link |
|---|---|
| AT (1) | AT342120B (en) |
| BE (1) | BE811886A (en) |
| BR (1) | BR7401553D0 (en) |
| CH (1) | CH586981A5 (en) |
| DE (1) | DE2310940C3 (en) |
| FI (1) | FI60330C (en) |
| FR (1) | FR2220939B1 (en) |
| GB (1) | GB1452158A (en) |
| IT (1) | IT1011028B (en) |
| LU (1) | LU69544A1 (en) |
| NL (1) | NL7402912A (en) |
| NO (1) | NO140318C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7704703A (en) * | 1977-04-29 | 1978-10-31 | Philips Nv | ELECTRONIC DC TELEGRAPHY TRANSMITTER. |
| DE2833732C2 (en) * | 1978-08-01 | 1981-12-03 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Circuit arrangement for the transmission of direct current telegraph characters |
| NL181896C (en) * | 1979-06-05 | 1987-11-16 | Philips Nv | ELECTRONIC TRANSMITTER FOR DC TELEGRAPHITE TRANSMISSION. |
| DE2925747C2 (en) * | 1979-06-26 | 1981-07-30 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Circuit arrangement for an electronic direct current telegraph transmitter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2035379C3 (en) * | 1970-07-16 | 1975-10-09 | Siemens Ag | Circuit arrangement for setting the line current in telegraph subscriber connection circuits of a switching system |
| FR2146091B1 (en) * | 1971-07-16 | 1976-05-28 | Constr Telephoniques | |
| GB1424525A (en) * | 1972-05-11 | 1976-02-11 | Elliott Brothers London Ltd | Data transmission system |
-
1973
- 1973-03-05 DE DE2310940A patent/DE2310940C3/en not_active Expired
-
1974
- 1974-01-30 AT AT74774A patent/AT342120B/en not_active IP Right Cessation
- 1974-02-08 NO NO740433A patent/NO140318C/en unknown
- 1974-02-14 FI FI425/74A patent/FI60330C/en active
- 1974-02-14 GB GB681374A patent/GB1452158A/en not_active Expired
- 1974-02-15 CH CH214274A patent/CH586981A5/xx not_active IP Right Cessation
- 1974-03-04 LU LU69544A patent/LU69544A1/xx unknown
- 1974-03-04 NL NL7402912A patent/NL7402912A/xx not_active Application Discontinuation
- 1974-03-04 BR BR1553/74A patent/BR7401553D0/en unknown
- 1974-03-05 FR FR7407508A patent/FR2220939B1/fr not_active Expired
- 1974-03-05 IT IT49008/74A patent/IT1011028B/en active
- 1974-03-05 BE BE141654A patent/BE811886A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI60330C (en) | 1981-12-10 |
| BR7401553D0 (en) | 1974-11-19 |
| NO140318C (en) | 1979-08-08 |
| DE2310940A1 (en) | 1974-09-19 |
| CH586981A5 (en) | 1977-04-15 |
| LU69544A1 (en) | 1974-10-09 |
| IT1011028B (en) | 1977-01-20 |
| GB1452158A (en) | 1976-10-13 |
| BE811886A (en) | 1974-09-05 |
| FI60330B (en) | 1981-08-31 |
| NL7402912A (en) | 1974-09-09 |
| NO140318B (en) | 1979-04-30 |
| DE2310940B2 (en) | 1978-08-10 |
| AT342120B (en) | 1978-03-10 |
| DE2310940C3 (en) | 1979-05-03 |
| ATA74774A (en) | 1977-07-15 |
| FR2220939A1 (en) | 1974-10-04 |
| NO740433L (en) | 1974-09-06 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |