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US Patent: 339,287
Combined plumb, level, and square
Patentee:
Charles Gates - Lebanon, PA

USPTO Classifications:
33/340, 33/354, 33/392, 33/404, 33/418, 33/451, 33/465, 33/499

Tool Categories:
layout tools : levels
layout tools : squares

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jan. 18, 1886
Granted: Apr. 06, 1886

Patent Pictures:
USPTO pdf tiff
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