TODAY’S PATENT – PORTABLE RADIO TELEPHONE
The PORTALBE RADIO TELEPHONE was invented by Mark Nadir (Fort Lauderdale, FL), Gordon W. James (Plantation, FL), William J. Kuznicki (Coral Springs, FL), Jerome A. Nieds (Margate, FL) on 7th of February 1984, bearing the patent number US4430755A.
This invention relates to portable radio telephone systems. It relates to portable radio units that are adaptable for connection through a terminal to provide service into the commercial telephone system.
A system for radio-telephone communication between a user at a remote location and the commercial telephone system or between two users at remote locations comprises a fixed terminal that is connected by wire lines or the like to the commercial telephone system and a plurality of portable radio units. The terminal is equipped for duplex operation on a plurality of channels, each of which uses separate frequency bands for transmitting and receiving. Each of the portable units is a simplex transceiver adapted to receive on each of the frequencies of transmission from the terminal and to broadcast on each of the frequencies received by the terminal.