Combined twin-nibbed marker and ball-point pen

Details Combined twin-nibbed marker and ball-point pen Combined twin-nibbed marker and ball-point pen

1987-04-24

1990-02-27

Largen, James R.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 41, D19 43, D19 48

Patent

active

D03063151

REFERENCES:
patent: D279224 (1985-06-01), Wolbrom
patent: D300331 (1989-03-01), Horntrich
patent: 3782600 (1974-01-01), Columbus
patent: 4573818 (1986-03-01), Kodera
patent: 4600328 (1986-07-01), Clements
patent: 4652163 (1987-03-01), Karliner et al.

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