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US Patent: 520,810
Electric Reciprocating Motor
Patentee: Elihu Thomson (exact or similar names) - Swampscott, Essex County, MA USPTO Classifications: 175/56, 310/23, 310/27, 310/28, 318/124, 318/129, 318/134 Tool Categories: electrical devices : electric motors Assignees: Thomson-Houston Electric Co. - Lynn, Essex County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 10, 1891 Granted: Jun. 05, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Thomson-Houston Electric Co.

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