NL294864A - - Google Patents
Info
- Publication number
- NL294864A NL294864A NL294864DA NL294864A NL 294864 A NL294864 A NL 294864A NL 294864D A NL294864D A NL 294864DA NL 294864 A NL294864 A NL 294864A
- Authority
- NL
- Netherlands
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 |
|---|---|---|---|
| DES80238A DE1165677B (de) | 1962-07-04 | 1962-07-04 | Schaltungsanordnung zum Pruefen von Leitungen in Fernmelde-, insbesondere Fernsprechanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL294864A true NL294864A (xx) |
Family
ID=7508752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL294864D NL294864A (xx) | 1962-07-04 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3287502A (xx) |
| BE (1) | BE634506A (xx) |
| CH (1) | CH403873A (xx) |
| DE (1) | DE1165677B (xx) |
| GB (1) | GB1007959A (xx) |
| NL (1) | NL294864A (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1229151B (de) * | 1965-02-26 | 1966-11-24 | Siemens Ag | Schaltungsanordnung zur Potentialbestimmung auf elektrischen Leitungen |
| US4034161A (en) * | 1976-06-28 | 1977-07-05 | Bell Telephone Laboratories, Incorporated | Telephone receiver-off-hook detector |
| US4034162A (en) * | 1976-06-28 | 1977-07-05 | Bell Telephone Laboratories, Incorporated | Telephone receiver-off-hook detector |
| JPS52156411U (xx) * | 1977-05-11 | 1977-11-28 |
-
0
- NL NL294864D patent/NL294864A/xx unknown
- BE BE634506D patent/BE634506A/xx unknown
-
1962
- 1962-07-04 DE DES80238A patent/DE1165677B/de active Pending
-
1963
- 1963-07-01 US US293230A patent/US3287502A/en not_active Expired - Lifetime
- 1963-07-03 GB GB26324/63A patent/GB1007959A/en not_active Expired
- 1963-07-03 CH CH821563A patent/CH403873A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE634506A (xx) | |
| DE1165677B (de) | 1964-03-19 |
| CH403873A (de) | 1965-12-15 |
| GB1007959A (en) | 1965-10-22 |
| US3287502A (en) | 1966-11-22 |