Inventor
STEEL FRANCIS R
US8 patents
Patents
8 patentsUS4875038AOct 17, 1989
Frequency division multiplexed acknowledge back paging system
MOTOROLA INC239 citations98
US4918437AApr 17, 1990
High data rate simulcast communication system
MOTOROLA INC137 citations97
US4825193AApr 25, 1989
Acknowledge back pager with adaptive variable transmitter output power
MOTOROLA INC129 citations97
US4737969AApr 12, 1988
Spectrally efficient digital modulation method and apparatus
MOTOROLA INC136 citations97
US5142279AAug 25, 1992
Acknowledge back paging system having the capability of matching variable length data messages to pager addresses
MOTOROLA INC166 citations96
US4891637AJan 2, 1990
Acknowledge back pager with apparatus for controlling transmit frequency
MOTOROLA INC118 citations95
US4968966ANov 6, 1990
High data rate simulcast communication system
MOTOROLA INC84 citations92
US4888793ADec 19, 1989
Phase correcting DPSK/PSK receiver with digitally stored phase correction derived from received data
MOTOROLA INC28 citations90