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US Patent: 220,309
Hot Air Engine
Patentee: Alexander K. Rider (exact or similar names) - Walden, Orange County, NY USPTO Classifications: 60/526 Tool Categories: propulsion and energy : external combustion engines : hot air engines Assignees: Thomas J. Rider - Walden, Orange County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 27, 1879 Granted: Oct. 07, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Rider-Ericsson Engine Co.

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