Crayon

Details Crayon Crayon

1988-04-14

1991-04-16

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 36, D19 41, D19 57

Patent

active

D03162729

REFERENCES:
patent: D56340 (1920-10-01), Cohen
patent: D61334 (1922-08-01), Walter, Jr.
patent: D128427 (1941-07-01), Silson
patent: D258201 (1981-02-01), Cassini
patent: D259032 (1981-04-01), Reyes
patent: D284980 (1986-08-01), Yoshida

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