Automatic pencil

Details Automatic pencil Automatic pencil

1994-03-30

1995-05-09

Thompson, Martie

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 49, D19 51, D19 56

Patent

active

D03581683

REFERENCES:
patent: D130051 (1941-10-01), Weisseuborn
patent: D269189 (1983-05-01), Sakaoka
patent: D284773 (1986-07-01), Schwartz et al.
patent: D307034 (1990-04-01), Petterson
patent: D308396 (1990-06-01), Sekiquchi
patent: D338039 (1993-08-01), Takahashi
patent: 4601598 (1986-07-01), Schwartz et al.
patent: 4938626 (1990-07-01), Kuo
patent: 4966478 (1990-10-01), Kuo
Jacobs Gardner Office Products, .COPYRGT.1989, see p. 584.

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