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US Patent: 1,255,644
Protractor-level for drills and other tools
Patentee:
Dennis D. Roth (exact or similar names) - Atlantic City, NJ

USPTO Classifications:
33/333, 33/388

Tool Categories:
layout tools : levels
layout tools : levels : clinometers

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Thomas F. Scott
Donald R. Wallace

Patent Dates:
Applied: Mar. 09, 1917
Granted: Feb. 05, 1918

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
The example shown is made of brass and marked only "PAT. FEB-5-18".

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