Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent
1975-10-14
1977-07-05
Spangler, Robert C.
Recording, communication, or information retrieval equipment
Computer, data processor equipment
D1401
Patent
active
D02449617
REFERENCES:
patent: D204907 (1966-05-01), Boldt
patent: D222883 (1972-01-01), Levow
patent: D223294 (1972-04-01), Wada et al.
patent: D234316 (1975-02-01), Mansfield
Home Furnishings Daily, 4/30/1971, sec. I, p. 12, Electrophonic Receiver/Phonograph.
Boldt Melvin H.
Chuboff David P.
Franek Wayne
Pederson John J.
Spangler Robert C.
Zarfas Louis S,.
Zenith Radio Corporation
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