SE363454B - - Google Patents
Info
- Publication number
- SE363454B SE363454B SE02659/70A SE265970A SE363454B SE 363454 B SE363454 B SE 363454B SE 02659/70 A SE02659/70 A SE 02659/70A SE 265970 A SE265970 A SE 265970A SE 363454 B SE363454 B SE 363454B
- Authority
- SE
- Sweden
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE02659/70A SE363454B (en]) | 1970-02-27 | 1970-02-27 | |
| US00118025A US3760122A (en) | 1970-02-27 | 1971-02-23 | Switching device for telephone instruments |
| CH279671A CH521073A (de) | 1970-02-27 | 1971-02-26 | Schaltvorrichtung für einen Telephonapparat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE02659/70A SE363454B (en]) | 1970-02-27 | 1970-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE363454B true SE363454B (en]) | 1974-01-14 |
Family
ID=20260400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE02659/70A SE363454B (en]) | 1970-02-27 | 1970-02-27 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3760122A (en]) |
| CH (1) | CH521073A (en]) |
| SE (1) | SE363454B (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927278A (en) * | 1973-03-23 | 1975-12-16 | Nitsuko Ltd | Direct-station-selection intercommunication and automatic holding circuit in a key telephone system |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR720111A (fr) * | 1930-07-17 | 1932-02-16 | Siemens Ag | Appareil téléphonique automatique à main |
| US2183744A (en) * | 1936-01-13 | 1939-12-19 | Jesse P Hubbell | Telephone instrument |
| NL85027C (en]) * | 1941-07-10 | |||
| BE465890A (en]) * | 1942-12-30 | |||
| US2657265A (en) * | 1948-01-23 | 1953-10-27 | Branson John Charles Sydney | Amplifying device for use with telephone apparatus |
| US2549929A (en) * | 1948-03-24 | 1951-04-24 | Kenworth Mfg & Stamping Co | Adjustable radio silencer |
| US2586910A (en) * | 1950-10-12 | 1952-02-26 | Edward A Bolle | Lamp switch actuator for use in conjunction with a telephone apparatus |
| US2812422A (en) * | 1953-12-28 | 1957-11-05 | Brearley Co | Illuminated bathroom scale |
| US2910538A (en) * | 1957-06-10 | 1959-10-27 | Gen Telephone Lab Inc | Desk telephone |
| US3100818A (en) * | 1959-11-06 | 1963-08-13 | Thomas F Carter | Communication systems |
| US3156771A (en) * | 1960-11-14 | 1964-11-10 | Elijah J Vaughn | Telephone loud-speaker combination |
| NO120997B (en]) * | 1964-10-19 | 1971-01-04 | Ring System Maskiner Gustav | |
| US3548117A (en) * | 1968-02-28 | 1970-12-15 | Knut Hugo Blomberg | Wallbracket for standing telephones |
| US3636547A (en) * | 1969-06-09 | 1972-01-18 | Robert J Brace | Alarm system and method of incorporating magnetic switch means magnetically controlled electrical switches |
-
1970
- 1970-02-27 SE SE02659/70A patent/SE363454B/xx unknown
-
1971
- 1971-02-23 US US00118025A patent/US3760122A/en not_active Expired - Lifetime
- 1971-02-26 CH CH279671A patent/CH521073A/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CH521073A (de) | 1972-03-31 |
| US3760122A (en) | 1973-09-18 |