Pipe wrench

Details Pipe wrench Pipe wrench

2002-05-10

2003-05-13

Barkai, Raphael (Department: 2912)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0474380

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

REFERENCES:
patent: 1445211 (1923-02-01), Gore
patent: 2028406 (1936-01-01), Mead
patent: 2559973 (1951-07-01), Kunz
patent: D164505 (1951-09-01), Larson
patent: 2742808 (1956-04-01), Haberle
patent: D184451 (1959-02-01), Mullin
patent: 2875659 (1959-03-01), Haberle
patent: 5251518 (1993-10-01), Woo
patent: WO 01/19570 (2001-03-01), None
Photocopy #1—Undated photocopy of a pipe wrench commercially available prior to 2000.
Photocopy #2—Undated photocopy of the opposite side of the wrench in Photocopy #1.

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