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US Patent: 471,253
Valve Gear for Compound Engines
Patentees: Taylor W. Heintzelman (exact or similar names) - Sacramento, Sacramento County, CA Charles T. Noyes (exact or similar names) - Sacramento, Sacramento County, CA USPTO Classifications: 91/157, 91/159, 91/331 Tool Categories: propulsion and energy : steam engines : steam engine valve gear propulsion and energy : steam engines : compound steam engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 21, 1891 Granted: Mar. 22, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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