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US Patent: 9,474X
Plough
Patentees:
John Mears - Dorchester, MA
David Prouty - Hanover, MA

USPTO Classifications:
172/754

Tool Categories:
wrenches : auxiliary wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Lorenzo Prouty

Patent Dates:
Applied: Nov. 11, 1835
Granted: Mar. 04, 1836

Patent Pictures:
David Prouty and John Mears Pat. March 4, 1836
USPTO pdf tiff
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Description:
A wrench-head pin is shown on the plow beam.

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