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US Patent: 816,217
Throttle Valve
Patentee: John Chambers (exact or similar names) - Wilmington, New Hanover County, NC USPTO Classifications: 137/630.14, 251/279, 74/101 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 11, 1905 Granted: Mar. 27, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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