Tapping screw

Details Tapping screw Tapping screw

2010-11-04

2011-10-04

Chin, Cynthia M (Department: 2915)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0646152

CLAIM:
The ornamental design for a tapping screw, as shown and described.

REFERENCES:
patent: 3238836 (1966-03-01), Johnson
patent: 3398625 (1968-08-01), Ansingh
patent: 3537288 (1970-11-01), Ansingh
patent: 4834602 (1989-05-01), Takasaki
patent: 5110245 (1992-05-01), Hiroyuki
patent: 5772374 (1998-06-01), Ide et al.
patent: 7021877 (2006-04-01), Birkelbach et al.
patent: 7037059 (2006-05-01), Dicke
patent: D601004 (2009-09-01), Hagins
patent: 7762752 (2010-07-01), Kato

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