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US Patent: 489,413
Folding Try Square
Patentee: James Eugene Duncan (exact or similar names) - Centralia, WI USPTO Classifications: 33/498 Tool Categories: layout tools : squares : try squares layout tools : bevels Assignees: James Eugene Duncan - Centralia, WI Joseph Henry Welch - Minneapolis, MN Manufacturer: Not known to have been produced Witnesses: J. W. Cantwell F. E. Kellner	Patent Dates: Applied: May 18, 1891 Granted: Jan. 03, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.

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