Electronically tunable quad-band antennas for handset...

Electronically tunable quad-band antennas for handset...

Electronically tuneable fiber-optic receiver for narrow band mic

Electrooptical pointing device for remotely controlling electron

Emergency broadcast alert detector

Enhanced radio data system

Enhanced sleep mode in radiocommunication systems

Entry apparatus of digital value in memory

Entry apparatus of digital value in memory

Expansion network for increasing the number of subscriber termin

Exterior mounted remote control television channel selector

Fail-safe optical repeater-amplifier assembly for fiber optic sy

Failure alarm for a transmission line communications system

Fast scanning radio receiver with frequency data base management

Fast tuning control for a television system

Fault location system for optical repeating paths

Fault tolerant data transmission network

Fault tolerant-fiber optic coupler/repeater for use in high spee

Fault-tolerant fiber optic coupler/repeater for use in high spee

Feed forward amplifier system employing self-generating...