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US Patent: 56,166
Improved Tool
Byron Boardman - Norwich, CT

USPTO Classifications:
7/143, 81/101, 81/107, 81/167, 81/185.2, 81/437

Tool Categories:
wrenches : wrench combination tools
combination tools


Boardman & Co. - Norwich, CT
Tower & Lyon - New York, NY

James Boardman
Geo. G. Bottom

Patent Dates:
Granted: Jul. 10, 1866

Patent Pictures: [ 1 | 2 ]
Byron Boardman patent July 10, 1866
USPTO pdf tiff
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Boardman's improvements to A.W. Park's combination tool patented May 30, 1865 (48,027) include a pipe gripping insert in the jaw, a retaining pin for the adjusting knurl, a square socket in the end of the handle, and a hardened screwdriver tip. Few of the extant examples have the knurl retaining pin feature.

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