Office supplies; artists and teachers materials – Teaching material – Demonstrator or exhibitor
Patent
1977-04-07
1979-02-13
Feifer, Melvin B.
Office supplies; artists and teachers materials
Teaching material
Demonstrator or exhibitor
D1907
Patent
active
D02510944
REFERENCES:
legion Lighting Co. Inc. Cat., Nov. 1, 1968, p. 38, lower left, Fluorescent tubes.
Legion Lighting Co. Inc. Cat., Excelon Surface Luminaires, Fluorescent Lights.
Krachman Howard E.
Lindsey Larry G.
Blakely, Jr. Roger W.
Developmental Sciences, Inc.
Feifer Melvin B.
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