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US Patent: 711,239
Rotary Engine
Patentee: Eber Blake Tree (exact or similar names) - Woodstock, Oxford County, ON, Canada USPTO Classifications: 418/138, 418/140, 418/145, 418/149, 418/94, 91/453 Tool Categories: Assignees: Portland Engine Co. - Portland, Cumberland County, ME Manufacturer: Baird & Tree - Woodstock, Oxford County, ON, Canada Witnesses: Pierre Barnes John N. Perkins George C. McDonald William J. Dick	Patent Dates: Applied: Oct. 31, 1901 Granted: Oct. 14, 1902 Patent Pictures: [ 1 | 2 | 3 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Baird & Tree
Description: See also, U. S. patent #616,643.

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