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US Patent: 332,632
Piston Valve
Patentee: Pardon Amington (exact or similar names) - Providence, RI USPTO Classifications: 137/625.68 Tool Categories: propulsion and energy : steam engines : steam engine valve gear Assignees: Armington & Sims Engine Co. - Providence, RI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 02, 1883 Granted: Dec. 15, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Armington & Sims Co.

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