US2564660A
(en)
*
|
1946-08-02 |
1951-08-21 |
Ollie J Allen |
Means for interconnecting radio and telephone systems
|
US2488153A
(en)
*
|
1947-03-04 |
1949-11-15 |
Jay D Wiener |
Portable telephone extension
|
NL139323B
(nl)
*
|
1947-03-19 |
|
Ici Ltd |
Werkwijze voor het polymeriseren van alkenen-1.
|
US2523914A
(en)
*
|
1947-05-09 |
1950-09-26 |
Automatic Elect Lab |
Radiotelephone system
|
US2649539A
(en)
*
|
1948-02-21 |
1953-08-18 |
Bell Telephone Labor Inc |
Microwave carrier telephone system
|
US2536825A
(en)
*
|
1948-03-26 |
1951-01-02 |
Stromberg Carlson Co |
Multiplex telephony
|
US2616032A
(en)
*
|
1948-10-20 |
1952-10-28 |
Automatic Elect Lab |
Single channel mobile telephone system
|
US2530815A
(en)
*
|
1949-02-02 |
1950-11-21 |
Automatic Elect Lab |
Mobile radiotelephone system having a single channel and a single frequency
|
US2791692A
(en)
*
|
1952-06-20 |
1957-05-07 |
Jr Edward Theordore Kurtzner |
Pulse-beacon transmitter circuit
|
US2883521A
(en)
*
|
1952-10-23 |
1959-04-21 |
Motorola Inc |
Radio dispatching system for railroad use
|
CA587598A
(fr)
*
|
1955-02-25 |
1959-11-24 |
Westinghouse Electric Corporation |
Systeme de communication par micro-ondes
|
US2894121A
(en)
*
|
1956-02-28 |
1959-07-07 |
Warrick D Morison Jr |
Radiotelephone system featuring switching circuit for portable radio transmitter andreceiver
|
US3065421A
(en)
*
|
1957-05-21 |
1962-11-20 |
John M Hart |
Radio-telephone communication system having means for automatic direct dispatch between mobile stations
|
US3193623A
(en)
*
|
1961-08-07 |
1965-07-06 |
Automatic Elect Lab |
Wireless extension telephone
|
US3254159A
(en)
*
|
1962-04-10 |
1966-05-31 |
Bio Tronics Res Inc |
Telephone adapter
|
US3210665A
(en)
*
|
1962-12-31 |
1965-10-05 |
Gen Electric |
Mobile radio with timing circuit for automatically energizing the transmitter upon receipt of a call
|
US3267379A
(en)
*
|
1963-07-10 |
1966-08-16 |
Dan E Bloxsom |
Automatic radio telephone and signaling communication device
|
US3286184A
(en)
*
|
1963-09-11 |
1966-11-15 |
Western Electric Co |
Portable telephone system
|
US4468538A
(en)
*
|
1982-12-16 |
1984-08-28 |
Gte Automatic Electric Inc. |
Wireless telephone system with high level dial pulse signalling
|
US4471166A
(en)
*
|
1982-12-16 |
1984-09-11 |
Gte Automatic Electric Inc. |
Wireless telephone extension unit with high level dial pulse signalling
|
US4469918A
(en)
*
|
1983-03-23 |
1984-09-04 |
Gte Automatic Electric Inc. |
Wireless telephone system with high level dial pulse signalling
|