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US Patent: 63,619
Improvement in air and gas engines
Patentee: David Dick (exact or similar names) - Meadville, PA USPTO Classifications: 60/39.76 Tool Categories: propulsion and energy : external combustion engines : hot air engines Assignees: None Manufacturer: Not known to have been produced Witnesses: John S. Hollingshead John D. Bloor	Patent Dates: Granted: Apr. 09, 1867 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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