Writing instrument

Details Writing instrument Writing instrument

1990-12-27

1993-04-27

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 41, D19 51, D 9500

Patent

active

D03351408

REFERENCES:
patent: D51139 (1917-08-01), Ginnetti
patent: D80362 (1930-01-01), Cuthbert et al.
patent: D121087 (1940-06-01), Andrews
patent: D186924 (1959-12-01), Lakatosh
patent: D192984 (1962-06-01), Fuchs
patent: D213422 (1969-03-01), Sizer
patent: D225725 (1973-01-01), Pettengill
patent: D268598 (1983-04-01), Mizutani et al.
patent: D269444 (1983-06-01), Medebach
patent: D269445 (1983-06-01), Kruckel et al.
patent: D284980 (1986-08-01), Yoshida
patent: D295421 (1988-04-01), Young
patent: D314590 (1991-02-01), Molina

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