Ball point pen

Details Ball point pen Ball point pen

1990-04-09

1992-09-15

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 43, D19 56, D19 48, D19 57

Patent

active

D03294617

REFERENCES:
patent: D92704 (1934-07-01), Cromer
patent: D122971 (1940-10-01), Marshall
patent: D138032 (1944-06-01), Severy
patent: D140026 (1945-01-01), Schladermundt et al.
patent: D143176 (1945-12-01), Whitehouse
patent: D150320 (1948-07-01), Starr
patent: D284773 (1986-07-01), Schwartz et al.
patent: D319663 (1991-09-01), Katami

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