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US Patent: 39,124
Plumb, Level, and Square
Patentees:
John S. Davidson - Cranberry, NJ
Enoch Pullen - Prospect Plains, NJ
Derrick G. Davidson - Prospect Plains, NJ

USPTO Classifications:
33/368, 33/391

Tool Categories:
layout tools : levels : plumbs
layout tools : squares

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. W. Davidson
Joseph Mather

Patent Dates:
Granted: Jul. 07, 1863

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
This is a fairly striaghtforward plumb, with a built-in square.

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