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US Patent: 517,821
Gas Engine
Patentees: Jaques Labataille (exact or similar names) - San Francisco, CA Justin J. Graff (exact or similar names) - San Francisco, CA USPTO Classifications: 123/162 Tool Categories: propulsion and energy : internal combustion engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 22, 1893 Granted: Apr. 03, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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