Writing instrument

Details Writing instrument Writing instrument

1991-01-30

1992-11-10

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 48, D19 56, D19 50

Patent

active

D03309118

REFERENCES:
patent: D159125 (1950-06-01), Wuestman
patent: D182162 (1958-02-01), Carreiro
patent: D182163 (1958-02-01), Carreiro
patent: D208680 (1967-09-01), Summers
patent: D212866 (1968-12-01), Perraud
patent: D213739 (1969-04-01), Konwiser
patent: D253060 (1979-10-01), Itoh
patent: D285730 (1986-09-01), Bulwick
patent: D318490 (1991-07-01), Klodt

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