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US Patent: 368,422
Valve for steam-engines
Patentee: Charles T. Porter (exact or similar names) - New York, NY USPTO Classifications: 123/188.4, 137/625.68 Tool Categories: propulsion and energy : steam engines : steam engine valves Assignees: None Manufacturer: Charles T. Porter - Newark, NJ Witnesses: F. A. Richmond M. F. Boyle	Patent Dates: Applied: Jul. 29, 1886 Granted: Aug. 16, 1887 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Charles. T. Porter; Porter-Allen Engine Co.

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