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US Patent: 310,838
Ball Governor
Patentee: Robert McKenna (exact or similar names) - White, Shelby County, TN USPTO Classifications: 73/540, 74/404.5 Tool Categories: propulsion and energy : steam engines : steam engine governors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 17, 1884 Granted: Jan. 13, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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