Countersunk washer

Details Countersunk washer Countersunk washer

2002-12-11

2003-10-21

Coles, Doris V. (Department: 2913)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0480953

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

REFERENCES:
patent: 2226496 (1940-12-01), Jacocks
patent: D383053 (1997-09-01), Schrader et al.
patent: D383378 (1997-09-01), Schrader et al.

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