Ballpoint pen

Details Ballpoint pen Ballpoint pen

1997-05-01

1998-02-24

Thompson, Martie

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56, D19 48, 1906

Patent

active

D03912922

REFERENCES:
patent: D138499 (1944-08-01), Beckstrom
patent: D148218 (1947-12-01), Fiedler
patent: D240525 (1976-07-01), Defores
patent: D269189 (1983-05-01), Sakaoka
patent: D271115 (1983-10-01), Luntz
patent: D277682 (1985-02-01), Luntz
patent: D279115 (1985-06-01), Nishida
patent: D288825 (1987-03-01), Thompson et al.
patent: D305552 (1990-01-01), Itoh
patent: D314978 (1991-02-01), Oka

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