Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent
1983-11-14
1986-02-11
Corrigan, Jane E.
Recording, communication, or information retrieval equipment
Computer, data processor equipment
242199
Patent
active
D02825490
REFERENCES:
patent: 4328936 (1982-05-01), Bordignon
patent: 4458858 (1984-07-01), Nelson
patent: 4506846 (1985-03-01), Gelardi et al.
Advertising brochure for Audio Cassettes dated Mar. 10, 1978.
Corrigan Jane E.
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
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