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US Patent: 938,649
Controller for electric motors
Patentee: Frederick Diehl (exact or similar names) - Elizabeth, NJ USPTO Classifications: 192/17C, 477/12 Tool Categories: Assignees: Diehl Mfg. Co. - Elizabeth, NJ Manufacturer: Not known to have been produced Witnesses: H. A. Kornemann Joseph F. Jaquith	Patent Dates: Applied: May 11, 1908 Granted: Nov. 02, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Diehl Mfg. Co.
Description: Improvements to patent 854,050.

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