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US Patent: 51,037
Governor Valve
Patentee: Robert W. Gardner (exact or similar names) - Quincy, Adams County, IL USPTO Classifications: 137/625.34 Tool Categories: propulsion and energy : steam engines : steam engine governors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Nov. 21, 1865 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Gardner Governor Co.

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