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US Patent: 437,508
Gas or Motor Engine
Patentee: Nicolaus August Otto (exact or similar names) - Cologne, German Empire USPTO Classifications: 123/334, 123/335, 123/90.14 Tool Categories: Assignees: Gas-Motoren-Fabrik-Deutz - Köln-Deutz, Germany Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 24, 1890 Granted: Sep. 30, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Otto Gas Engine Works
Description: Patented in Belgium, 13 May 1890, #90,540 and in Italy, 07 Jun 1890, #LIV, 42.

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