Ball-point pen

Details Ball-point pen Ball-point pen

1992-04-06

1993-07-13

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 56

Patent

active

D03373509

REFERENCES:
patent: D179053 (1956-10-01), Baker
patent: D200510 (1965-03-01), Fehling et al.
patent: D200511 (1965-03-01), Fehling et al.
patent: D200512 (1965-03-01), Fehling et al.
patent: D319663 (1991-09-01), Katami
patent: D324070 (1992-02-01), Suzuki
patent: D327703 (1992-07-01), Katami
patent: D330911 (1992-11-01), Tu
patent: D332282 (1993-01-01), Hu

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