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US Patent: 798,695
Combination Square and Protractor
Emanuel Oehrle - Omaha, NE

USPTO Classifications:
33/341, 33/343, 33/419

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

Frank R. Heft - Omaha, NE

Not known to have been produced

C. J. Smith
D. O. Barnell
Howard J. Cowgill

Patent Dates:
Applied: Apr. 14, 1904
Granted: Sep. 05, 1905

Patent Pictures:
USPTO pdf tiff
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