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US Patent: 228,717
Heaters for Air-Engines
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 F. Woodbury (exact or similar names) - Boston, Suffolk County, MA USPTO Classifications: 123/188.3, 60/517, 60/522 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: May 05, 1880 Granted: Jun. 08, 1880 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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