US2270385A
(en )
1942-01-20
Multicarrier transmission system
US3511936A
(en )
1970-05-12
Multiply orthogonal system for transmitting data signals through frequency overlapping channels
US2960573A
(en )
1960-11-15
Electric carrier current communication systems
US2670404A
(en )
1954-02-23
Multichannel radioelectric communication system
US2559644A
(en )
1951-07-10
Pulse multiplex system
US4161694A
(en )
1979-07-17
Radio relay channel branch cascade exhibiting uniform transit-time-and-attenuation-characteristics of all channels
US1985046A
(en )
1934-12-18
Electrical wave production
US2522368A
(en )
1950-09-12
Angular velocity modulation system
US3324396A
(en )
1967-06-06
Multiple conversion transceiver utilizing single oscillator
BE572261A
(enrdf_load_stackoverflow )
US2855462A
(en )
1958-10-07
Multichannel signal system
US4145575A
(en )
1979-03-20
Frequency-division multiplexed signal transmission system
US2297451A
(en )
1942-09-29
Method of selective filtering of frequency band ranges
US3495188A
(en )
1970-02-10
Single-sideband carrier frequency system utilizing a premodulation stage for providing the base primary group
FI60474C
(fi )
1982-01-11
Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem
US2005795A
(en )
1935-06-25
High frequency multiplex signaling system
US3259692A
(en )
1966-07-05
Multi-channel electric wave signalling apparatus
US2284247A
(en )
1942-05-26
Radio signaling system
GB737136A
(en )
1955-09-21
Improvements in or relating to multiplex television systems
US3294913A
(en )
1966-12-27
Frequency division multiplex system for sideband transmission
US2102472A
(en )
1937-12-14
Multichannel carrier transmission system
US2274535A
(en )
1942-02-24
Carrier wave system
US2790029A
(en )
1957-04-23
Carrier-wave telephone system
US2657269A
(en )
1953-10-27
Electric pulse modulation system of communication
US2546994A
(en )
1951-04-03
Multiplex carrier current telephony