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US Patent: 357,584
Tool for Closing Mainspring Barrels
Patentee: William Wallace Dudley (exact or similar names) - Waltham, Middlesex County, MA USPTO Classifications: 29/232, 29/267, 29/268 Tool Categories: trade specific : watchmaker Assignees: None Manufacturer: Not known to have been produced Witnesses: R. H. Eddy R. B. Torrey	Patent Dates: Applied: Oct. 16, 1886 Granted: Feb. 15, 1887 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin
Description: Patented in Canada, 25 Oct 1886, #25,203

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