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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:
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