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US Patent: 345,336
Commutator brush
Patentee: Elihu Thomson (exact or similar names) - Lynn, Essex County, MA USPTO Classifications: 310/244, 310/248 Tool Categories: electrical devices : electric motors : motor brushes Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 16, 1885 Granted: Jul. 13, 1886 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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