Pen

Details Pen Pen

1990-06-15

1993-03-09

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 42, D19 45, D19 55

Patent

active

D03338371

REFERENCES:
patent: D19456 (1889-12-01), Brossy et al.
patent: D22264 (1893-03-01), Lydick
patent: D58425 (1921-07-01), Fish
patent: D93444 (1934-10-01), Blakeman
patent: D162522 (1951-03-01), Currence et al.
patent: D168531 (1953-01-01), Brudny
patent: D252520 (1979-07-01), Tjiri
patent: D280110 (1985-08-01), Brooks
patent: D288824 (1987-03-01), Ijiri
patent: D308889 (1990-06-01), Gecchelin
patent: 4728212 (1988-03-01), Spector

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