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US Patent: 90,128
Hot Air Engine
Patentee: Philander Shaw (exact or similar names) - Boston, Middlesex County, MA USPTO Classifications: 60/729, 91/183 Tool Categories: propulsion and energy : external combustion engines : hot air engines Assignees: Shaw's Union Air-Engine Co. - Boston, Middlesex County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: May 18, 1869 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Shaw's Union Air-Engine Co.

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