US Patent: 1,070,343 - Pipe Wrench


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US Patent: 1,070,343

Pipe Wrench

Patentee:

Henry F. Hoffmann (exact or similar names) - New York, NY

USPTO Classifications:

81/103

Tool Categories:

wrenches : pipe wrenches

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Unknown

Witnesses:

George L. Beeler

Philip D. Rollhaus

Patent Dates:
Applied:	Mar. 12, 1913
Granted:	Aug. 12, 1913

Patent Pictures:

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Description:

According to Ken Cope's "American Wrench Makers 1830-1930," Hoffman used this patent and his Sept. 10, 1918 patent (no. 1,278,653) in pipe wrenches he produced.