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US Patent: 893,188
Cut Off Valve for Engines
Patentee: Isaac Erwin McElroy (exact or similar names) - Muscatine, Muscatine County, IA USPTO Classifications: 91/253, 91/327, 91/333 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. 26, 1906 Granted: Jul. 14, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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