BE522411A - - Google Patents
Info
- Publication number
- BE522411A BE522411A BE522411DA BE522411A BE 522411 A BE522411 A BE 522411A BE 522411D A BE522411D A BE 522411DA BE 522411 A BE522411 A BE 522411A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE740876X | 1952-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE522411A true BE522411A (en:Method) |
Family
ID=20321606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE522411D BE522411A (en:Method) | 1952-08-29 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE522411A (en:Method) |
| FR (1) | FR1086971A (en:Method) |
| GB (1) | GB740876A (en:Method) |
| NL (2) | NL87902C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1210050B (de) * | 1963-08-08 | 1966-02-03 | Telefonbau | Schaltungsanordnung zur Kontrolle der Durchschaltung ein- oder mehrstufiger Koppelfelder in Fernmeldevermittlungsanlagen, insbesondere Fernsprechwaehlanlagen |
-
0
- BE BE522411D patent/BE522411A/xx unknown
- NL NLAANVRAGE7413733,A patent/NL180972B/xx unknown
- NL NL87902D patent/NL87902C/xx active
-
1953
- 1953-08-27 GB GB23746/53A patent/GB740876A/en not_active Expired
- 1953-08-29 FR FR1086971D patent/FR1086971A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL87902C (en:Method) | |
| GB740876A (en) | 1955-11-23 |
| FR1086971A (fr) | 1955-02-17 |
| NL180972B (nl) |