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US Patent: 460,421
Combined Protractor & Bevel
Patentee:
George E. Allen (exact or similar names) - Hartford, CT

USPTO Classifications:
33/470

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Ernst Schau
Edward Eberle

Patent Dates:
Applied: Apr. 03, 1891
Granted: Sep. 29, 1891

Patent Pictures:
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