Writing instrument clip

Details Writing instrument clip Writing instrument clip

1991-02-20

1993-03-30

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Element or attachment

D19 54, D19 51

Patent

active

D03344088

REFERENCES:
patent: D47595 (1915-07-01), Huber
patent: D177359 (1956-04-01), Young et al.
patent: D265212 (1982-06-01), Spiegel
patent: D279993 (1985-08-01), Oka
patent: D323530 (1992-01-01), Cowan
patent: 854378 (1907-05-01), Ochoa
patent: 1033693 (1912-07-01), Hart
patent: 1555714 (1925-09-01), Kahn
patent: 1975775 (1934-10-01), Ashmare
patent: 2039410 (1936-05-01), Harris

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