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US Patent: 324,891
Electric Dynamic Motor
Patentee: Frank J. Sprague (exact or similar names) - New York, NY USPTO Classifications: 310/186, 310/220, 318/525, 318/785 Tool Categories: electrical devices : electric motors : DC motors Assignees: Sprague Electric Railway & Motor Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 12, 1885 Granted: Aug. 25, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Sprague Electric Railway & Motor Co.

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