NL6608421A - - Google Patents
Info
- Publication number
- NL6608421A NL6608421A NL6608421A NL6608421A NL6608421A NL 6608421 A NL6608421 A NL 6608421A NL 6608421 A NL6608421 A NL 6608421A NL 6608421 A NL6608421 A NL 6608421A NL 6608421 A NL6608421 A NL 6608421A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Measurement Of Current Or Voltage (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1965ST024002 DE1280344B (de) | 1965-06-19 | 1965-06-19 | Schaltungsanordnung zur UEberwachung einer Fernmelde-, insbesondere Fernsprechleitung auf Schleifenunterbrechungen |
| DEST24773A DE1301372B (de) | 1965-06-19 | 1965-12-16 | Schaltungsanordnung zur UEberwachung von Fernmelde-, insbesondere Fernsprechleitungen auf Schleifenunterbrechungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6608421A true NL6608421A (https=) | 1966-12-20 |
Family
ID=25994337
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6608421A NL6608421A (https=) | 1965-06-19 | 1966-06-16 | |
| NL6617624A NL6617624A (https=) | 1965-06-19 | 1966-12-15 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6617624A NL6617624A (https=) | 1965-06-19 | 1966-12-15 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3467787A (https=) |
| BE (2) | BE682671A (https=) |
| CH (2) | CH453439A (https=) |
| DE (1) | DE1301372B (https=) |
| GB (2) | GB1130017A (https=) |
| NL (2) | NL6608421A (https=) |
| SE (2) | SE315925B (https=) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7990176B2 (en) * | 2009-09-23 | 2011-08-02 | Ralink Technology Corp. | Low power line driver and method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1141350B (de) * | 1960-10-13 | 1962-12-20 | Fritz Hellige & Co G M B H | Schutzschaltung gegen UEberspannungen bei kurzzeitigem Ausfallen des Speisestromes |
| US3299404A (en) * | 1962-12-28 | 1967-01-17 | Bell Telephone Labor Inc | Detection circuit responsive to pulse duration and frequency |
-
1965
- 1965-12-16 DE DEST24773A patent/DE1301372B/de active Pending
-
1966
- 1966-06-01 US US3467787D patent/US3467787A/en not_active Expired - Lifetime
- 1966-06-15 SE SE813666A patent/SE315925B/xx unknown
- 1966-06-16 NL NL6608421A patent/NL6608421A/xx unknown
- 1966-06-17 BE BE682671D patent/BE682671A/xx unknown
- 1966-06-17 GB GB2709866A patent/GB1130017A/en not_active Expired
- 1966-06-17 CH CH884366A patent/CH453439A/de unknown
- 1966-12-09 GB GB5521866A patent/GB1159669A/en not_active Expired
- 1966-12-15 BE BE691243D patent/BE691243A/xx unknown
- 1966-12-15 SE SE1718066A patent/SE325317B/xx unknown
- 1966-12-15 NL NL6617624A patent/NL6617624A/xx unknown
- 1966-12-16 CH CH1808366A patent/CH470117A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE691243A (https=) | 1967-06-15 |
| GB1159669A (en) | 1969-07-30 |
| BE682671A (https=) | 1966-12-19 |
| CH470117A (de) | 1969-03-15 |
| GB1130017A (en) | 1968-10-09 |
| NL6617624A (https=) | 1967-06-19 |
| SE315925B (https=) | 1969-10-13 |
| DE1301372B (de) | 1969-08-21 |
| CH453439A (de) | 1968-06-14 |
| SE325317B (https=) | 1970-06-29 |
| US3467787A (en) | 1969-09-16 |