Office supplies; artists and teachers materials – Teaching material
Patent
1976-04-21
1978-09-26
Feifer, Melvin B.
Office supplies; artists and teachers materials
Teaching material
D1907
Patent
active
D02496976
REFERENCES:
patent: 3871114 (1975-03-01), Honig
patent: 3982331 (1976-09-01), Solomon
Dominguez Olga A.
Hester Gene A.
Comuzzi Donald R.
Feifer Melvin B.
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