Ball point pen

Details Ball point pen Ball point pen

1998-07-30

1999-07-20

Holtje, Martie K.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56, 1906

Patent

active

D04121830

REFERENCES:
patent: D169307 (1953-04-01), Ferber
patent: D182311 (1958-03-01), Steinberg
patent: D190349 (1961-05-01), Doman
patent: D213739 (1969-04-01), Konwiger
patent: D286789 (1986-11-01), Thompson
patent: D288825 (1987-03-01), Thompson
patent: D289304 (1987-04-01), Giugiaro
patent: D386058 (1997-11-01), Schmidt et al.
patent: D388825 (1998-01-01), Kouda
patent: D400580 (1998-11-01), Schmidt et al.
patent: 3709619 (1973-01-01), Zepell

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