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US Patent: 21,250
Sewing Machine Improvement in Sewing Machines
Patentees: R. B. Fitts (exact or similar names) - Charlestown, MA Milton D. Whipple (exact or similar names) - Charlestown, MA USPTO Classifications: 112/136, 112/221 Tool Categories: household : sewing machines Assignees: None Manufacturer: Not known to have been produced Witnesses: P. E. Teschemacher Thomas R. Roach	Patent Dates: Granted: Aug. 24, 1858 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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