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US Patent: 1,400,328
Internal Combustion Engine
Patentee: Carl G. Sprado (exact or similar names) - Milwaukee, WI USPTO Classifications: 239/409, 239/411 Tool Categories: Assignees: Allis-Chalmers Co. - Milwaukee, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 14, 1918 Granted: Dec. 13, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Allis-Chalmers Manufacturing Co.

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