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US Patent: 66,695
Plumb Level
Patentees:
Christian Ensminger - Springfield, MA
Alpheus W. Elmer - Springfield, MA

USPTO Classifications:
33/451

Tool Categories:
layout tools : levels : inclinometers
layout tools : protractors

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph Miller
John M. Stebbins

Patent Dates:
Granted: Jul. 16, 1867

Patent Pictures:
USPTO pdf tiff
Google Patents
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