BE686584A - - Google Patents
Info
- Publication number
- BE686584A BE686584A BE686584DA BE686584A BE 686584 A BE686584 A BE 686584A BE 686584D A BE686584D A BE 686584DA BE 686584 A BE686584 A BE 686584A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST024377 | 1965-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE686584A true BE686584A (en:Method) | 1967-03-08 |
Family
ID=7460090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE686584D BE686584A (en:Method) | 1965-09-10 | 1966-09-08 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE686584A (en:Method) |
| CH (1) | CH443411A (en:Method) |
| FR (1) | FR1513305A (en:Method) |
| NL (1) | NL6612564A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783198A (en) * | 1971-03-18 | 1974-01-01 | Gte Automatic Electric Lab Inc | Battery reversal detection |
-
1966
- 1966-09-06 NL NL6612564A patent/NL6612564A/xx unknown
- 1966-09-08 BE BE686584D patent/BE686584A/xx unknown
- 1966-09-08 FR FR75687A patent/FR1513305A/fr not_active Expired
- 1966-09-08 CH CH1301366A patent/CH443411A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6612564A (en:Method) | 1967-03-13 |
| FR1513305A (fr) | 1968-02-16 |
| CH443411A (de) | 1967-09-15 |