Double head wrench

Details Double head wrench Double head wrench

2007-11-06

2007-11-06

Barkai, Raphael (Department: 2915)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

29256381

CLAIM:
The ornamental design for a double head wrench, as shown and described.

REFERENCES:
patent: D27824 (1897-11-01), Trahern
patent: 1061609 (1913-05-01), Guernsey
patent: 3620107 (1971-11-01), Evans
patent: 3641847 (1972-02-01), Horton
patent: 3717054 (1973-02-01), Thompson
patent: 3850057 (1974-11-01), Evans
patent: D437536 (2001-02-01), Macor
patent: D440839 (2001-04-01), Lee
patent: D476868 (2003-07-01), Wright et al.

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