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US Patent: 1,014,931
Chain Pipe Wrench
George Amborn - New York, NY

USPTO Classifications:

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

J. H. Williams & Co. - Brooklyn, NY

J. H. Williams & Co. - Brooklyn, NY

Eugene G. Myers
Fred White
René Bruine

Patent Dates:
Applied: Apr. 21, 1910
Granted: Jan. 16, 1912

Patent Pictures:
George Amborn patent Jan. 16, 1912
USPTO pdf tiff
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Refinement of the "VULCAN BIJAW" design in 952,860. Hooks to hold the chain are set on both sides of the handle; a number of alternatives for the interface of the reversible jaws and handle shank are described.

Arthur C. Fraser & Co. - patent attorneys

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