NL261283A - - Google Patents
Info
- Publication number
- NL261283A NL261283A NL261283DA NL261283A NL 261283 A NL261283 A NL 261283A NL 261283D A NL261283D A NL 261283DA NL 261283 A NL261283 A NL 261283A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE149360 | 1960-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL261283A true NL261283A (en:Method) |
Family
ID=20258279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL261283D NL261283A (en:Method) | 1960-02-15 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3185771A (en:Method) |
| BE (1) | BE600182A (en:Method) |
| DE (1) | DE1137772B (en:Method) |
| FR (1) | FR1280398A (en:Method) |
| GB (1) | GB960062A (en:Method) |
| NL (1) | NL261283A (en:Method) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2591580A (en) * | 1948-10-29 | 1952-04-01 | Bell Telephone Labor Inc | Special trunk circuits for transmitting tones to calling subscribers |
| US2871297A (en) * | 1954-03-08 | 1959-01-27 | Itt | 100-line direct-access crossbar telephone switching unit |
-
0
- NL NL261283D patent/NL261283A/xx unknown
-
1961
- 1961-02-09 US US88131A patent/US3185771A/en not_active Expired - Lifetime
- 1961-02-14 DE DET19665A patent/DE1137772B/de active Pending
- 1961-02-14 BE BE600182A patent/BE600182A/fr unknown
- 1961-02-15 FR FR852843A patent/FR1280398A/fr not_active Expired
- 1961-02-15 GB GB5713/61A patent/GB960062A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE600182A (fr) | 1961-05-29 |
| FR1280398A (fr) | 1961-12-29 |
| DE1137772B (de) | 1962-10-11 |
| US3185771A (en) | 1965-05-25 |
| GB960062A (en) | 1964-06-10 |