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US Patent: 798,695
Combination Square and Protractor
Patentee: Emanuel Oehrle (exact or similar names) - 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 Assignees: Frank R. Heft - Omaha, NE Manufacturer: Not known to have been produced Witnesses: C. J. Smith D. O. Barnell Howard J. Cowgill	Patent Dates: Applied: Apr. 14, 1904 Granted: Sep. 05, 1905 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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