Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Writing or drawing surface – e.g. – blackboard – drawing board,...
Patent
1980-07-28
1982-07-27
Feifer, Melvin B.
Office supplies; artists and teachers materials
Equipment for writing, drawing, or for fine arts
Writing or drawing surface, e.g., blackboard, drawing board,...
D 9431, D1906
Patent
active
D02655705
REFERENCES:
patent: D174015 (1955-02-01), Bosma
patent: D244833 (1977-06-01), Persson
patent: 697764 (1902-04-01), Williams
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