Pen

Details Pen Pen

1986-12-11

1990-04-03

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 41

Patent

active

D03070344

REFERENCES:
patent: D174249 (1955-03-01), Daniels
patent: D269445 (1983-06-01), Kruckel et al.
patent: D284582 (1984-07-01), Bruhn
patent: D284773 (1986-07-01), Schwartz et al.
patent: D286164 (1986-10-01), Tinz
patent: D289304 (1987-04-01), Guigiaro
patent: D294599 (1988-03-01), Funahashi

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