Portable radio telephone

Details Portable radio telephone Portable radio telephone

1991-09-12

1993-08-03

Lucas, Susan J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Radio transceiver

Patent

active

D03380041

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Nihon Kogyo Shimbun, Jan. 10, 1991, Micro Portable Phone of Japan Steel Works, Ltd.
Nihon Keizai Shimbun, Oct. 6, 1990 Mitsubishi Portable Phone MT-79XFOR6A.
Nihon Dempa Shimbun, Jan. 10, 1991, Hitachi Radio Telephone RTP1.
Dempa Shimbun, Dec. 6, 1990, NTT Portable Phones: 1) Mitsubishi Electric Corp 2) Matsushita Comm. Industrial Co 3) Fujitsu Limited.

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