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US Patent: 480,739
Commutator for electro-magnetic machines
Patentee: Horace F. Parshall (exact or similar names) - Schenectady, NY USPTO Classifications: 310/219 Tool Categories: electrical devices : electric motors : motor commutators Assignees: Edison General Electric Co. - Schenectady, NY Manufacturer: Not known to have been produced Witnesses: Frederick A. Phelps, Jr. Joseph Insull	Patent Dates: Applied: Dec. 11, 1891 Granted: Aug. 16, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for General Electric Co.

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