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US Patent: 660,618
Device for truing commutators
Patentee: Percy B. Bosworth (exact or similar names) - Akron, OH USPTO Classifications: 29/76.1, 451/418, 82/137, 82/158 Tool Categories: specialty machines : commutator dressing machines Assignees: Frank G. Carnahan - Akron, OH Percy B. Bosworth - Akron, OH Manufacturer: Not known to have been produced Witnesses: C. P. Humphrey C. E. Humphrey	Patent Dates: Applied: Aug. 10, 1900 Granted: Oct. 30, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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