Twin-nibbed marking instrument

Details Twin-nibbed marking instrument Twin-nibbed marking instrument

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 51

Patent

active

D03063160

REFERENCES:
patent: 196270 (1897-10-01), Trask
patent: D247246 (1978-02-01), Verona
patent: D279992 (1985-08-01), Gribb
patent: 1479996 (1924-01-01), Lundmark
patent: 1710130 (1929-04-01), Wiese
patent: 4600327 (1986-07-01), Guzman

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