ES175948A1 - IMPROVEMENTS IN TELEPHONE TERMINALS OF WAVE CARRIER IN TWO SENSES WITH CALL CONTROL DEVICE - Google Patents
IMPROVEMENTS IN TELEPHONE TERMINALS OF WAVE CARRIER IN TWO SENSES WITH CALL CONTROL DEVICEInfo
- Publication number
- ES175948A1 ES175948A1 ES175948A ES175948A ES175948A1 ES 175948 A1 ES175948 A1 ES 175948A1 ES 175948 A ES175948 A ES 175948A ES 175948 A ES175948 A ES 175948A ES 175948 A1 ES175948 A1 ES 175948A1
- Authority
- ES
- Spain
- Prior art keywords
- senses
- control device
- call control
- telephone terminals
- wave carrier
- Prior art date
- 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
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US591068A US2414795A (en) | 1945-04-30 | 1945-04-30 | Ringing control arrangement for two-way carrier telephone terminals |
Publications (1)
Publication Number | Publication Date |
---|---|
ES175948A1 true ES175948A1 (en) | 1947-01-01 |
Family
ID=24364926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES175948A Expired ES175948A1 (en) | 1945-04-30 | 1946-11-29 | IMPROVEMENTS IN TELEPHONE TERMINALS OF WAVE CARRIER IN TWO SENSES WITH CALL CONTROL DEVICE |
Country Status (4)
Country | Link |
---|---|
US (1) | US2414795A (en) |
BE (1) | BE465290A (en) |
ES (1) | ES175948A1 (en) |
FR (1) | FR926079A (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR960967A (en) * | 1945-02-06 | 1950-04-28 | ||
US2457830A (en) * | 1946-03-05 | 1949-01-04 | Jr George F Moynahan | Spot frequency oscillator system |
US2540299A (en) * | 1946-08-27 | 1951-02-06 | Borg George W Corp | Sound recording and reproducing apparatus |
BE477040A (en) * | 1946-11-01 | |||
US2654003A (en) * | 1947-11-24 | 1953-09-29 | Int Electronics Co | Oscillator-amplifier circuits for magnetic recording and reproducing systems |
US2682627A (en) * | 1949-01-25 | 1954-06-29 | Askania Regulator Co | Motor position control station arrangement |
NL72570C (en) * | 1949-09-02 | |||
BE499154A (en) * | 1949-11-05 | |||
US2677726A (en) * | 1950-07-26 | 1954-05-04 | Bell Telephone Labor Inc | Signaling system for carrier telephone transmission |
BE523372A (en) * | 1952-10-08 | |||
US2938081A (en) * | 1952-12-27 | 1960-05-24 | Gen Electric | Selective transmission system for telephonic ringing |
CA609116A (en) * | 1956-04-02 | 1960-11-22 | Westinghouse Air Brake Company | Transistor transceiver |
-
0
- BE BE465290D patent/BE465290A/xx unknown
-
1945
- 1945-04-30 US US591068A patent/US2414795A/en not_active Expired - Lifetime
-
1946
- 1946-04-26 FR FR926079D patent/FR926079A/en not_active Expired
- 1946-11-29 ES ES175948A patent/ES175948A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR926079A (en) | 1947-09-22 |
US2414795A (en) | 1947-01-28 |
BE465290A (en) |
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