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US Patent: 74,297
Improvement in Pattern-Square
Patentee: Nelson W. Burnett (exact or similar names) - South Hadley, MA USPTO Classifications: 33/415 Tool Categories: layout tools : squares : carpenter squares trade specific : carpenter Assignees: None Manufacturer: Not known to have been produced Witnesses: R. F. Hyde E. H. Hyde	Patent Dates: Granted: Feb. 11, 1868 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)
Description: Primarily intended for laying out mortises in timber-frame construction.

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