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US Patent: 1,923,919
Throttle Valve
Patentee: John De Mooy (exact or similar names) - Cleveland, Cuyahoga County, OH USPTO Classifications: 251/191 Tool Categories: hardware : valves Assignees: Cleveland Pneumatic Tool Co. - Cleveland, Cuyahoga County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 27, 1931 Granted: Aug. 22, 1933 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cleveland Pneumatic Tool Co.

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