NL262555A - - Google Patents
Info
- Publication number
- NL262555A NL262555A NL262555DA NL262555A NL 262555 A NL262555 A NL 262555A NL 262555D A NL262555D A NL 262555DA NL 262555 A NL262555 A NL 262555A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
- H04M1/745—Protection devices or circuits for voltages surges on the line
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE272760 | 1960-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL262555A true NL262555A (xx) |
Family
ID=20260540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL262555D NL262555A (xx) | 1960-03-18 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3126452A (xx) |
| BE (1) | BE601489A (xx) |
| FR (1) | FR1284315A (xx) |
| GB (1) | GB951124A (xx) |
| NL (1) | NL262555A (xx) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3558830A (en) * | 1969-04-09 | 1971-01-26 | Communication Technology Inc | Overvoltage transmission line protector |
| US3715514A (en) * | 1970-10-07 | 1973-02-06 | Dektor Counterintelligence And | Telephone security device |
| US3997737A (en) * | 1974-11-27 | 1976-12-14 | San/Bar Corporation | Security line card circuit |
| US3925624A (en) * | 1974-12-27 | 1975-12-09 | Bell Telephone Labor Inc | Coupling circuit for providing bilateral protection from hazardous voltages |
| SE426002B (sv) * | 1980-12-23 | 1982-11-29 | Ellemtel Utvecklings Ab | Anordning for skydd av en krets i en telekommunikationsutrustning mot overspenningar |
| FR2560726B1 (fr) * | 1984-03-05 | 1986-11-21 | Nal Etu Telecommunication Cent | Dispositif de protection contre des perturbations electriques entre un terminal et une ligne telephonique |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1907660A (en) * | 1930-03-12 | 1933-05-09 | Siemens Ag | Telephone substation circuit |
| BE435545A (xx) * | 1938-07-22 | |||
| US2394275A (en) * | 1942-12-04 | 1946-02-05 | Autophon Ag | Device for switching-in and disconnecting signal apparatus |
| BE483204A (xx) * | 1947-11-04 |
-
0
- US US3126452D patent/US3126452A/en not_active Expired - Lifetime
- NL NL262555D patent/NL262555A/xx unknown
-
1961
- 1961-03-17 GB GB9959/61A patent/GB951124A/en not_active Expired
- 1961-03-17 BE BE601489A patent/BE601489A/fr unknown
- 1961-03-18 FR FR856072A patent/FR1284315A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3126452A (en) | 1964-03-24 |
| GB951124A (en) | 1964-03-04 |
| BE601489A (fr) | 1961-07-17 |
| FR1284315A (fr) | 1962-02-09 |