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CA Patent: CA-254,413
Speed controller
Patentee:
John M. Barr (exact or similar names) - Milwaukee, WI

USPTO Classifications:

Tool Categories:
electrical devices : electric motors : motor controls

Assignees:
Louis Allis Co. - Milwaukee, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Oct. 06, 1925

Patent Pictures:
CIPO Data
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