Writing instrument

Details Writing instrument Writing instrument

1990-04-06

1992-08-11

Walsh, Donald P.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56

Patent

active

D03286118

REFERENCES:
patent: D124230 (1940-12-01), Dreyfuss
patent: D160436 (1950-10-01), Seibert
patent: D173918 (1952-01-01), Vogel
patent: D178924 (1956-10-01), Kahn
patent: D201231 (1965-05-01), Jenkins
patent: D238068 (1975-12-01), Maryynissen
patent: D252998 (1979-09-01), Turner
patent: D254315 (1980-02-01), Carre
patent: D258219 (1981-02-01), Oka
patent: D267887 (1983-02-01), Rigoni
patent: D312837 (1990-12-01), Oka

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