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US Patent: 120,325
Improvement in Air Engines
Patentee: Alexander K. Rider (exact or similar names) - New York, NY USPTO Classifications: 110/173R, 417/443, 60/39.464, 60/39.63 Tool Categories: propulsion and energy : external combustion engines : hot air engines Assignees: Alexander K. Rider - New York, NY C. H. Delamater - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Oct. 24, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Delamater Iron Works

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