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US Patent: 1,782,928
Humidifier
Patentee: James S. Knowlson (exact or similar names) - Hinsdale, IL USPTO Classifications: 261/28, 261/29, 261/80 Tool Categories: specialty machines : air conditioning apparatus Assignees: Speedway Mfg. Co. - Chicago, IL Manufacturer: Speedway Mfg. Co. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Nov. 11, 1929 Granted: Nov. 25, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Speedway Mfg. Co.

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