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US Patent: 1,803,120
Internal Combustion Engine
Patentee: Harold E. McCray (exact or similar names) - Waterloo, Black Hawk County, IA USPTO Classifications: 184/13.1, 184/6 Tool Categories: Assignees: John Deere Tractor Co. - Waterloo, Black Hawk County, IA Manufacturer: John Deere Tractor Co. - Waterloo, Black Hawk County, IA Witnesses: Unknown	Patent Dates: Applied: Feb. 15, 1923 Granted: Apr. 28, 1931 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for John Deere

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