Pen

Details Pen Pen

1992-07-22

1993-12-21

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56

Patent

active

D03425452

REFERENCES:
patent: D238359 (1976-01-01), Zepell
patent: D286164 (1986-10-01), Tinz
patent: D299470 (1989-01-01), Mock
patent: D303992 (1989-10-01), Grotsch
patent: D312838 (1990-12-01), Vitrac
patent: D316726 (1991-05-01), Itoh
patent: D324070 (1992-02-01), Suzuki

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