Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1984-03-26
1986-08-26
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
D14 11
Patent
active
D02853078
REFERENCES:
patent: D248470 (1978-07-01), Talesfore
patent: D257345 (1980-10-01), Levy
patent: D260515 (1981-09-01), Welch et al.
patent: 4062049 (1977-12-01), Dirks
patent: 4177426 (1979-12-01), Gaishin et al.
Lucas Susan J.
Sinclair Research Limited
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