Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Guide
Patent
1977-11-17
1980-04-29
Zarfas, Louis S.
Office supplies; artists and teachers materials
Equipment for writing, drawing, or for fine arts
Guide
D1906
Patent
active
D02548550
REFERENCES:
patent: 2612690 (1952-10-01), Cotton
patent: 3791036 (1974-02-01), Stober et al.
Blair Forrest K.
Corrington Ted A.
Word George P.
Zarfas Louis S,.
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