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US Patent: 913,691
Variable-speed motor
Patentee: James Burke (exact or similar names) - Erie, PA USPTO Classifications: 307/12, 310/131, 388/808 Tool Categories: electrical devices : electric motors : DC motors electrical devices : electric motors : variable speed motors Assignees: Burke Electric Co. - Erie, PA Manufacturer: Burke Electric Co. - Erie, PA Witnesses: C. V. Edwards A. O. Chapin	Patent Dates: Applied: May 17, 1905 Granted: Mar. 02, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Burke Electric Co.

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