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US Patent: 632,666
Commutator Grinding Rig
Patentee:
Frederick Wilkie (exact or similar names) - New York, NY

USPTO Classifications:
384/255, 451/418, 82/128

Tool Categories:
specialty machines : commutator dressing machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 25, 1899
Granted: Sep. 05, 1899

Patent Pictures:
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