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US Patent: 413,497
Protractor
Patentee:
Clarence E. De Puy (exact or similar names) - Jackson, MI

USPTO Classifications:
33/403

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
K. B. Merritt
E. R. Lewis
Patent Dates:
Applied: Aug. 22, 1888
Granted: Oct. 22, 1889

Patent Pictures:
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