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US Patent: 621,177
Protractor
Patentee: George W. Sykes (exact or similar names) - Mercer, PA USPTO Classifications: 33/403 Tool Categories: metalworking tools : machinist tools : measuring tools : protractors layout tools : protractors Assignees: William E. McKelvy - Pittsburgh, PA Manufacturer: Not known to have been produced Witnesses: Watson Large C. C. Butterfield C. M. Brown W. E. McKelvy	Patent Dates: Applied: Nov. 19, 1898 Granted: Mar. 14, 1899 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: O. M. Clarke - patent attorney

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