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US Patent: RE9,857
Valve Action of Duplex Engines and Pumps
Patentee: William H. Guild, Jr. (exact or similar names) - Brooklyn, Kings County, NY USPTO Classifications: 91/189R Tool Categories: propulsion and energy : steam engines : steam engine valves industrial machines : pumps : pump valves Assignees: Guild & Garrison - Brooklyn, Kings County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 14, 1881 Granted: Sep. 06, 1881 Reissue Information: Reissue of 206,558 (Jul. 30, 1878) Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Guild & Garrison

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