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US Patent: 466,448
Commutator-brush and holder for dynamo-electric machines and motors
Patentee: Frank J. Sprague (exact or similar names) - New York, NY USPTO Classifications: 310/244 Tool Categories: electrical devices : electric motors : motor brushes electrical devices : electric motors : motor brush holders Assignees: Edison General Electric Co. - Schenectady, NY Manufacturer: Not known to have been produced Witnesses: C. N. Dever I. F. S. Brauth	Patent Dates: Applied: Dec. 10, 1886 Granted: Jan. 05, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Seibert Cylinder Oil Cup Co. Vintage Machinery entry for General Electric Co.

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