Spring clip

Details Spring clip Spring clip

1991-08-01

1993-03-30

Holtje, Nelson C.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

D19 86, D 8395

Patent

active

D03344118

REFERENCES:
patent: 1610861 (1926-12-01), Knight
patent: 3348272 (1967-10-01), Germani
patent: 3772741 (1973-11-01), Rosalik
patent: 3898717 (1975-08-01), Schwartz
patent: 4110872 (1978-09-01), Gould
patent: 4991269 (1991-02-01), Kuroda et al.
patent: 5136754 (1992-08-01), Kuroda

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