Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1986-03-14
1988-11-22
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D18 7
Patent
active
D02986230
REFERENCES:
patent: D258740 (1981-03-01), Matsumoto
patent: D262623 (1982-01-01), Fujimoto et al.
patent: D278341 (1985-04-01), Scheid
patent: D285574 (1986-09-01), Tokunaga
Radio Shack, 1983 TRS-80.RTM. catalog, p. 56, pocket computer.
Osaka Kazumi
Sakaguchi Hiroshi
Yubisui Takahisa
Lucas Susan J.
Sharp Corporation
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