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US Patent: 523,511
Oil Engine
Patentee: Hugh Campbell (exact or similar names) - Halifax, York County, England USPTO Classifications: 123/543, 123/87, 261/152, 261/50.2 Tool Categories: propulsion and energy : internal combustion engines : oil engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 17, 1894 Granted: Jul. 24, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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