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US Patent: 195,804
Auromatic Expansion Gearing for Steam Engines
Patentee: Andrew Cunningham (exact or similar names) - Troy, Rensselaer County, NY USPTO Classifications: 91/221, 91/334, 91/338 Tool Categories: propulsion and energy : steam engines : steam engine governors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 02, 1877 Granted: Oct. 02, 1877 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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