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CA Patent: CA-12,993
Improvements in Hot Air Engines Perfectionnements Aux Machines a Air Chaud
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: Tool Categories: propulsion and energy : external combustion engines : hot air engines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Jun. 15, 1881 Patent Pictures: CIPO Data 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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