Pen

Details Pen Pen

1989-02-13

1992-03-31

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 41, D19 48, D19 56

Patent

active

D03250466

REFERENCES:
patent: D83152 (1931-01-01), Deli
patent: D112750 (1938-12-01), Blake
patent: D120127 (1940-04-01), Lipic
patent: D159125 (1950-06-01), Wuestman
patent: D216844 (1970-03-01), Shimada
patent: 3228378 (1966-01-01), Rohrmuller
patent: 3343293 (1967-09-01), Kirklen

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