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US Patent: 648,766
Pipe Wrench
Patentee:
Roderick MacKay (exact or similar names) - Los Angeles, CA

USPTO Classifications:
81/65.2

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. W. Kemp
Jas. E. Knight
Robt. Train
J. A. Rollofsz
Patent Dates:
Applied: Nov. 23, 1899
Granted: May 01, 1900

Patent Pictures:
Roderick MacKay patent May 1, 1900
USPTO (New site tip)
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Description:
The patented features are the replaceable gripping teeth on the chain, and the means for connecting the chain and handle.

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