Writing instrument

Details Writing instrument Writing instrument

1987-07-10

1990-06-05

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 35, D19 46, D19 49, D21 87

Patent

active

D03083950

REFERENCES:
patent: D174113 (1955-03-01), Dey
patent: D232267 (1974-07-01), Zepell
patent: D238359 (1976-01-01), Zepell
patent: D252577 (1979-08-01), Leopoldi
patent: D263317 (1982-03-01), Swensson
patent: D271082 (1983-10-01), Jackson
patent: D276479 (1984-11-01), Mori
patent: D280110 (1985-08-01), Brooks
patent: 4568213 (1986-02-01), Money

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