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US Patent: 2,056,160
Valve Element and the Method of Forming the Same
Patentee: Harry L. Allen (exact or similar names) - Cleveland, OH USPTO Classifications: 123/188.8, 251/362, 29/525, 29/888.4 Tool Categories: propulsion and energy : internal combustion engines : internal combustion engine valves Assignees: Bruce-Macbeth Engine Co. - Cleveland, OH Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Feb. 14, 1931 Granted: Oct. 06, 1936 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Bruce-Macbeth Engine Co.

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