BE552560A - - Google Patents
Info
- Publication number
- BE552560A BE552560A BE552560DA BE552560A BE 552560 A BE552560 A BE 552560A BE 552560D A BE552560D A BE 552560DA BE 552560 A BE552560 A BE 552560A
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US558331A US2862061A (en) | 1956-01-10 | 1956-01-10 | Telephone line lockout arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE552560A true BE552560A (en:Method) |
Family
ID=24229128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE552560D BE552560A (en:Method) | 1956-01-10 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2862061A (en:Method) |
| BE (1) | BE552560A (en:Method) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2344653A (en) * | 1941-04-10 | 1944-03-21 | Kellogg Switchboard & Supply | Telephone line circuit |
| GB567864A (en) * | 1943-08-31 | 1945-03-06 | Standard Telephones Cables Ltd | Improvements in or relating to telecommunication exchange systems |
| NL78373C (en:Method) * | 1948-01-08 | |||
| US2731514A (en) * | 1951-01-12 | 1956-01-17 | Nederlanden Staat | Lockout electronic line circuit |
-
0
- BE BE552560D patent/BE552560A/xx unknown
-
1956
- 1956-01-10 US US558331A patent/US2862061A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2862061A (en) | 1958-11-25 |