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US Patent: 324,061
Hot Air Engine
Patentees: James A. Woodbury (exact or similar names) - Boston, Suffolk County, MA Joshua Merrill (exact or similar names) - Boston, Suffolk County, MA George Patten (exact or similar names) - Boston, Suffolk County, MA Edward Frank Woodbury (exact or similar names) - Boston, Suffolk County, MA USPTO Classifications: 60/521 Tool Categories: propulsion and energy : external combustion engines : hot air engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 04, 1881 Granted: Aug. 11, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Woodbury, Merrill, Patten and Woodbury Air Engine Co. The Woodbury Hot Air Engine

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