Recording – communication – or information retrieval equipment – Computer – data processor equipment
Patent
1978-10-13
1980-12-02
Feldman, Peter
Recording, communication, or information retrieval equipment
Computer, data processor equipment
D1402
Patent
active
D02575884
REFERENCES:
patent: 3414985 (1968-12-01), Ashley
patent: 3761877 (1973-09-01), Fernald
Playthings, Feb. 1977, p. 109, Electronic Blackboard, Model No. 4600.
Cadotte Ernest R.
Hester Gerald P.
Husted Martin D.
Da Rin Edward J.
Feldman Peter
MSI Data Corporation
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