Writing and drawing instrument

Details Writing and drawing instrument Writing and drawing instrument

1989-02-16

1991-10-08

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 51, D19 56, D19 57

Patent

active

D03206181

REFERENCES:
patent: D234225 (1975-01-01), Itoh
patent: D258219 (1981-02-01), Oka
patent: D283901 (1986-05-01), Horntrich
patent: D284773 (1986-07-01), Schwartz et al.
patent: D286164 (1986-10-01), Tinz
patent: D303992 (1989-10-01), Grotsch
patent: D309913 (1990-08-01), Shintani
patent: D311550 (1990-10-01), Yazaki
patent: D312478 (1990-11-01), Lecce

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