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US Patent: 112,978
Improvement in hinges for sewing-machines
Patentee: Roswell H. St. John (exact or similar names) - Bellefontaine, OH USPTO Classifications: 16/273, 16/DIG.033 Tool Categories: household : sewing machines hardware : hinges Assignees: None Manufacturer: St. John Sewing-Machine Co. - Springfield, OH Witnesses: Lewis Taylor Philander Jones	Patent Dates: Granted: Mar. 21, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for R. H. St. John
Description: The inventor had earlier patented and manufactured a jeweler's lathe.

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