JPS5548743B2 - - Google Patents
Info
- Publication number
- JPS5548743B2 JPS5548743B2 JP5330475A JP5330475A JPS5548743B2 JP S5548743 B2 JPS5548743 B2 JP S5548743B2 JP 5330475 A JP5330475 A JP 5330475A JP 5330475 A JP5330475 A JP 5330475A JP S5548743 B2 JPS5548743 B2 JP S5548743B2
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Amplifiers (AREA)
- Control Of Eletrric Generators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742422504 DE2422504B2 (de) | 1974-05-09 | 1974-05-09 | Nachrichtenuebertragungssystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50153810A JPS50153810A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-12-11 |
| JPS5548743B2 true JPS5548743B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-12-08 |
Family
ID=5915092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5330475A Expired JPS5548743B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-05-09 | 1975-05-06 |
Country Status (15)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4310721A (en) * | 1980-01-23 | 1982-01-12 | The United States Of America As Represented By The Secretary Of The Army | Half duplex integral vocoder modem system |
| US4631733A (en) * | 1984-12-17 | 1986-12-23 | Honeywell Inc. | Transceiver |
| US4812840A (en) * | 1987-06-29 | 1989-03-14 | Ncr Corporation | Multiple mode switching means |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3254159A (en) * | 1962-04-10 | 1966-05-31 | Bio Tronics Res Inc | Telephone adapter |
| US3366880A (en) * | 1965-11-08 | 1968-01-30 | American Tele Extension Co | Tone controlled wireless telephone extension system |
| US3917907A (en) * | 1971-01-12 | 1975-11-04 | Northeast Electronics Corp | Methods and apparatus for 4-wire switching |
| US3743938A (en) * | 1971-08-10 | 1973-07-03 | Gen Datacomm Ind Inc | Closed data loop test apparatus for data transmission modem |
-
1974
- 1974-05-09 DE DE19742422504 patent/DE2422504B2/de active Granted
-
1975
- 1975-05-05 US US05/574,614 patent/US4013956A/en not_active Expired - Lifetime
- 1975-05-06 DK DK199575A patent/DK140967C/da not_active IP Right Cessation
- 1975-05-06 JP JP5330475A patent/JPS5548743B2/ja not_active Expired
- 1975-05-06 NO NO751617A patent/NO139841C/no unknown
- 1975-05-06 CA CA226,410A patent/CA1027272A/en not_active Expired
- 1975-05-06 GB GB18959/75A patent/GB1509225A/en not_active Expired
- 1975-05-06 IT IT68151/75A patent/IT1032821B/it active
- 1975-05-06 NL NLAANVRAGE7505278,A patent/NL174692C/xx not_active IP Right Cessation
- 1975-05-06 CH CH582575A patent/CH592393A5/xx not_active IP Right Cessation
- 1975-05-07 BE BE156142A patent/BE828826A/xx not_active IP Right Cessation
- 1975-05-07 FR FR7514334A patent/FR2270739B1/fr not_active Expired
- 1975-05-07 AT AT351475A patent/AT342669B/de not_active IP Right Cessation
- 1975-05-07 BR BR3568/75D patent/BR7502797A/pt unknown
- 1975-11-10 SE SE7505203A patent/SE398429B/xx not_active IP Right Cessation