Paper clip

Details Paper clip Paper clip

1990-10-26

1993-03-16

Holtje, Nelson C.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

D19 86, D19 90

Patent

active

D03340252

REFERENCES:
patent: 703485 (1902-07-01), Shedlock
patent: 1053008 (1913-02-01), Carbis
patent: 1251884 (1918-01-01), Hann
patent: 1271043 (1918-07-01), Lee
patent: 1989953 (1935-02-01), Tibbals
patent: 2239584 (1941-04-01), Zane
patent: 2642638 (1953-06-01), Larrabee
patent: 3083425 (1963-04-01), Minnerly, Jr.
patent: 3125789 (1964-03-01), Parker
patent: 4170052 (1979-10-01), Okerblom
patent: 5063640 (1991-11-01), Link

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