Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent
1979-08-06
1981-11-24
O'Keefe, Veronica
Recording, communication, or information retrieval equipment
Computer, data processor equipment
D10 6, 179100D, 179 2TC, D1403
Patent
active
D02620251
REFERENCES:
patent: D243619 (1977-03-01), Olsson
patent: 3982072 (1976-09-01), Dean
patent: 4087650 (1978-05-01), Tucker
Friedel Bopp et al., TN-Nachrichten, 1972, p. 30.
Beecher Keith D.
O'Keefe Veronica
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