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US Patent: 321,147
Electro Dynamic Motor
Patentee: Frank J. Sprague (exact or similar names) - New York, NY USPTO Classifications: 318/257, 318/263 Tool Categories: electrical devices : electric motors Assignees: Sprague Electric Railway & Motor Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 27, 1885 Granted: Jun. 30, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Sprague Electric Railway & Motor Co.

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