Pen

Details Pen Pen

1989-04-12

1992-02-04

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 49, D19 54

Patent

active

D03236722

REFERENCES:
patent: D77800 (1929-02-01), Vedenburgh
patent: D105622 (1937-08-01), Trollen
patent: D119263 (1940-03-01), Harris
patent: D141530 (1945-06-01), Williams
patent: D141531 (1945-06-01), Williams
patent: D177468 (1956-04-01), Frooks
patent: D207563 (1967-05-01), Bailey, Jr.
patent: D240526 (1976-07-01), Verona
patent: D276479 (1984-11-01), Mori
patent: 3168072 (1965-02-01), Nitta
patent: 3756727 (1973-09-01), Gallagher

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