Pen

Details Pen Pen

1990-12-04

1992-10-06

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 49, D19 47, D19 51, D19 56

Patent

active

D03300463

REFERENCES:
patent: D39906 (1909-04-01), Boman
patent: D84812 (1931-08-01), Ionno
patent: D166254 (1952-03-01), Gazda
patent: D171675 (1954-03-01), Wisotsky
patent: D233613 (1974-11-01), Hand, III
patent: D265212 (1982-06-01), Spieqel
patent: D303549 (1989-09-01), Horntrich
patent: D307920 (1990-05-01), Sekiguchi
patent: D312096 (1990-11-01), Vitrac
patent: D319844 (1991-09-01), Grotsch et al.
patent: 5007756 (1991-04-01), Wey

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