Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1982-05-03
1985-03-19
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D18 7
Patent
active
D02780607
REFERENCES:
patent: D242251 (1977-02-01), Hazama et al.
patent: D248995 (1978-08-01), Hazama et al.
Computer Design, 10-1980, p. 227, TRS-80 Pocket Computer.
Popular Science, 4-1979, p. 23, Casio ST24 Compact Calculator.
Lucas Susan J.
Sharp Corporation
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