Office supplies; artists and teachers materials – Teaching material – Demonstrator or exhibitor
Patent
1977-10-18
1979-04-17
Lucas, Susan J.
Office supplies; artists and teachers materials
Teaching material
Demonstrator or exhibitor
D1907
Patent
active
D02515989
REFERENCES:
patent: D202704 (1965-11-01), Bartee
patent: D220626 (1971-05-01), Randazzo
patent: D225532 (1972-12-01), Flynn et al.
patent: 3728534 (1973-04-01), Bertram et al.
Computer Design, July 1974, p. 98-computer.
Teaching Machine Industry Survey & Buyer's Guide, .COPYRGT.1962, p. 104, Autoscope.
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