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US Patent: 222,376
Expansion-Valve for Steam Engines
Patentee: Alexis Bretonneau Fils (exact or similar names) - Mortague-sur-Sevre, France USPTO Classifications: 91/259 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 11, 1879 Granted: Dec. 09, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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