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US Patent: 850,277
System of motor control
Patentee: Clifford Ross Tatem (exact or similar names) - Buffalo, NY USPTO Classifications: 388/859, 417/40, 417/45 Tool Categories: electrical devices : electric motors : motor controls Assignees: Allis-Chalmers Co. - Milwaukee, WI Bullock Electric Mfg. Co. - Norwood, OH Manufacturer: Allis-Chalmers Co. - Milwaukee, WI Witnesses: David Howells W. A. James	Patent Dates: Applied: Mar. 31, 1906 Granted: Apr. 16, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Allis-Chalmers Mfg. Co. Vintage Machinery entry for Bullock Electric Mfg. Co.

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