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US Patent: 2,141,711
Automatic Air Control Means
Patentee: Bernard Morse Guthrie (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 110/101CB, 110/188, 110/190, 137/520, 236/45, 251/338 Tool Categories: specialty machines : fans and blowers Assignees: Fairbanks, Morse & Co. - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 08, 1935 Granted: Dec. 27, 1938 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Fairbanks Morse & Co.

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