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US Patent: 434,796
Throttle Valve
Patentee: Edward Leslie (exact or similar names) - Orangeville, Dufferin County, ON, Canada USPTO Classifications: 137/630.12, 137/637.2 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: Leslie Brothers Mfg. Co. - Paterson, Passaic County, NJ Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 20, 1889 Granted: Aug. 19, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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