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US Patent: 635,346
Tool for Abrasive Purposes
Patentee:
Rudolph S. Papprill (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:
451/418, 451/480

Tool Categories:
specialty tools : commutator truing tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 08, 1899
Granted: Oct. 24, 1899

Patent Pictures:
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