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US Patent: 742,025
Variable Speed Driving Mechanism
Patentees: Alfred Herbert (exact or similar names) - Kenilworth, Warwickshire County, England Percy Venables Vernon (exact or similar names) - Coventry, Warwick County, England USPTO Classifications: 74/337.5, 74/357 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms Assignees: None Manufacturer: Not known to have been produced Witnesses: Frank Floyd Joseph Johnson Thomas Durant Elizabeth Griffith	Patent Dates: Applied: Jul. 11, 1902 Granted: Oct. 20, 1903 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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