Portable telephone

Details Portable telephone Portable telephone

1992-05-26

1993-09-07

Douglas, Alan P.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Radio transceiver

Patent

active

D03391272

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patent: 5014346 (1991-05-01), Phillips et al.
Electronics Jun. 1990 advertisement of Motorola Personal Communicator.

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