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US Patent: 511,746
Self Registering Try Square
Patentee: George A. Bates (exact or similar names) - Chicago, IL USPTO Classifications: 33/418 Tool Categories: layout tools : squares : try squares Assignees: None Manufacturer: Not known to have been produced Witnesses: J. Halpenny D. H. Flekher Charles E. Davis C. L. Grohmann	Patent Dates: Applied: Dec. 09, 1890 Granted: Jan. 02, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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