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US Patent: 53,211
Improvement in stave-machines
Patentees: John R. Winfield (exact or similar names) - Pittsburgh, PA William S. Colwell (exact or similar names) - Pittsburgh, PA USPTO Classifications: 144/159 Tool Categories: woodworking machines : specialty woodworking machines : barrel making machines trade specific : cooper Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Mar. 13, 1866 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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