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US Patent: 324,955
Speed Changing Mechanism
Patentee: Benjamin B. Powell (exact or similar names) - Petoskey, Emmet County, MI USPTO Classifications: 74/353 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 13, 1884 Granted: Aug. 25, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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