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US Patent: 857,931
Tool for Turning and Dressing Commutators
Patentee:
Claus H. Frick (exact or similar names) - San Antonio, Bexar County, TX

USPTO Classifications:
29/27B, 82/128, 82/158

Tool Categories:
specialty machines : commutator dressing machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 02, 1906
Granted: Jun. 25, 1907

Patent Pictures:
USPTO (New site tip)
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