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US Patent: 2,558,937
Air Conditioning System and Apparatus
Patentee: Earnest J. Dillman (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 236/1C Tool Categories: specialty machines : air conditioning apparatus hardware : valves industrial machines : industrial machine mechanisms : industrial control apparatus : flow controls Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 19, 1945 Granted: Jul. 03, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Detroit Lubricator Co.

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