Double-ended marking pen

Details Double-ended marking pen Double-ended marking pen

1998-09-29

1999-09-21

Holtje, Martie K.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Plural or combined

D19 49, D19 51, D19 56, 1906

Patent

active

D04142012

REFERENCES:
patent: D322629 (1991-12-01), Hayes
patent: D363947 (1995-11-01), Kimura
patent: D390872 (1998-02-01), Sunaga
patent: D404069 (1999-01-01), Hasegawa
patent: 1539086 (1925-05-01), Hofman et al.
patent: 2726760 (1955-12-01), Dulberg
Six photographs of a Dual'Sharp.RTM. Two Tip Permanent Marker maunfacutured and sold by Avery Dennison, Diamond Bar, CA 91765, date unknown.

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