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US Patent: 161,392
Protractor
Patentee:
Alvin H. Dodd - New York, NY

USPTO Classifications:
33/471

Tool Categories:
metalworking tools : machinist tools : measuring tools : protractors
layout tools : protractors

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles H. Nash
T. B. Mosher

Patent Dates:
Applied: Jan. 18, 1875
Granted: Mar. 30, 1875

Patent Pictures:
USPTO pdf tiff
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