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US Patent: 1,782,927
Electric power device
Patentee: James S. Knowlson (exact or similar names) - Hinsdale, IL USPTO Classifications: 310/83, 74/16 Tool Categories: handheld power tools : handheld power rotary tools Assignees: Speedway Mfg. Co. - Chicago, IL Manufacturer: Speedway Mfg. Co. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Oct. 05, 1928 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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