BE684596A - - Google Patents
Info
- Publication number
- BE684596A BE684596A BE684596DA BE684596A BE 684596 A BE684596 A BE 684596A BE 684596D A BE684596D A BE 684596DA BE 684596 A BE684596 A BE 684596A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31807/65A GB1049359A (en) | 1965-07-26 | 1965-07-26 | Improvements in or relating to electrical telecommunication circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE684596A true BE684596A (pl) | 1967-01-26 |
Family
ID=10328710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE684596D BE684596A (pl) | 1965-07-26 | 1966-07-26 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3517133A (pl) |
| BE (1) | BE684596A (pl) |
| GB (1) | GB1049359A (pl) |
| NL (1) | NL6610416A (pl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4150260A (en) * | 1975-06-18 | 1979-04-17 | Hitachi, Ltd. | Subscriber's circuit for four-wire-system local switch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1406678A (en) * | 1920-03-02 | 1922-02-14 | Western Electric Co | Telephone system |
| NL133409C (pl) * | 1960-07-21 | |||
| US3230315A (en) * | 1962-06-04 | 1966-01-18 | Itt | Two-wire switching system for fourwire circuits |
-
1965
- 1965-07-26 GB GB31807/65A patent/GB1049359A/en not_active Expired
-
1966
- 1966-07-20 US US566640A patent/US3517133A/en not_active Expired - Lifetime
- 1966-07-25 NL NL6610416A patent/NL6610416A/xx unknown
- 1966-07-26 BE BE684596D patent/BE684596A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1049359A (en) | 1966-11-23 |
| NL6610416A (pl) | 1967-01-27 |
| US3517133A (en) | 1970-06-23 |