Color matching card

Details Color matching card Color matching card

1982-09-28

1985-10-29

Ansher, Bernard

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Guide

D19 40

Patent

active

D02811731

REFERENCES:
patent: Re13358 (1912-01-01), Wagner
patent: 328766 (1985-10-01), Dewey
patent: 688997 (1901-12-01), Hallock
patent: 1741080 (1929-12-01), Stenz
patent: 2074704 (1937-03-01), Osborne
patent: 2482963 (1949-09-01), Clute et al.
patent: 3517448 (1970-06-01), Wallace

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