Screw

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

Design Patent

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Design Patent

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D0567644

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

REFERENCES:
patent: 846981 (1907-03-01), Claiborne, Jr.
patent: 3045523 (1962-07-01), Reed
patent: D264807 (1982-06-01), Baumgartner
patent: 4572720 (1986-02-01), Rockenfeller et al.
patent: 6074149 (2000-06-01), Habermehl et al.
patent: 7063491 (2006-06-01), French
patent: 7090453 (2006-08-01), Lin
patent: D531491 (2006-11-01), Liu
patent: D551543 (2007-09-01), Williams et al.

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