Data pen

Details Data pen Data pen

1986-10-06

1989-08-29

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 43, D19 41

Patent

active

D03031241

REFERENCES:
patent: D268935 (1983-05-01), Horntrich
patent: D284199 (1986-06-01), Li
patent: 4007364 (1977-02-01), Ojima et al.
patent: 4128889 (1978-12-01), Ojima et al.
patent: 4404643 (1983-09-01), Ojima et al.
patent: 4541630 (1985-09-01), Dirks

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