Screw

Details Screw Screw

2002-06-07

2003-01-21

Douglas, Alan P. (Department: 2911)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0469007

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

REFERENCES:
patent: 2174578 (1939-10-01), Graham
patent: 4275541 (1981-06-01), Orals et al.
patent: 4653244 (1987-03-01), Farrell
patent: D347383 (1994-05-01), Carruthers
patent: 5622024 (1997-04-01), Habermehl
patent: 5746039 (1998-05-01), Nystrom
patent: 5758768 (1998-06-01), Habermehl et al.
patent: 5816012 (1998-10-01), Willis
patent: 6022177 (2000-02-01), Hofer
patent: 6074149 (2000-06-01), Habermehl et al.

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