BE528518A - - Google Patents
Info
- Publication number
- BE528518A BE528518A BE528518DA BE528518A BE 528518 A BE528518 A BE 528518A BE 528518D A BE528518D A BE 528518DA BE 528518 A BE528518 A BE 528518A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Secondary Cells (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US352370A US2748196A (en) | 1953-05-01 | 1953-05-01 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE528518A true BE528518A (en:Method) |
Family
ID=23384856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE528518D BE528518A (en:Method) | 1953-05-01 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2748196A (en:Method) |
| BE (1) | BE528518A (en:Method) |
| DE (2) | DE960472C (en:Method) |
| FR (1) | FR1114304A (en:Method) |
| GB (2) | GB771794A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1276116B (de) * | 1966-05-27 | 1969-05-29 | Siemens Ag | Schaltungsanordnung fuer Fernmeldevermittlungsanlagen, insbesondere Fernsprechanlagen, mit Pruefstromkreisen fuer Zwischenleitungspruefung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB324094A (en) * | 1928-10-15 | 1930-01-15 | Automatic Telephone Mfg Co Ltd | Improvements in or relating to telephone systems |
| US1914391A (en) * | 1931-08-19 | 1933-06-20 | Siemens Ag | Telephone system |
| GB439323A (en) * | 1934-09-24 | 1935-12-04 | Siemens Brothers & Co Ltd | Improvements relating to automatic telephone and like selective systems |
| AT173486B (de) * | 1951-09-05 | 1952-12-27 | Siemens Ag Albis | Schaltungsanordnung in Fernsprechanlagen mit Gruppenwählern |
-
0
- BE BE528518D patent/BE528518A/xx unknown
-
1953
- 1953-05-01 US US352370A patent/US2748196A/en not_active Expired - Lifetime
-
1954
- 1954-04-21 GB GB29722/55A patent/GB771794A/en not_active Expired
- 1954-04-21 GB GB11529/54A patent/GB771793A/en not_active Expired
- 1954-04-29 DE DEA22037A patent/DE960472C/de not_active Expired
- 1954-04-29 DE DEA20221A patent/DE954886C/de not_active Expired
- 1954-04-29 FR FR1114304D patent/FR1114304A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1114304A (fr) | 1956-04-11 |
| GB771794A (en) | 1957-04-03 |
| DE960472C (de) | 1957-03-21 |
| GB771793A (en) | 1957-04-03 |
| DE954886C (de) | 1956-12-27 |
| US2748196A (en) | 1956-05-29 |