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US Patent: 130,361
Improvement in Machines for Cutting Teeth on Cylinders
Patentees: Samuel B. Dean (exact or similar names) - Boston, Suffolk County, MA William T. Nicholson (exact or similar names) - Providence, Providence County, RI Gustavus Ames (exact or similar names) - Oswego, Oswego County, NY USPTO Classifications: 76/15, 76/22 Tool Categories: specialty machines : file cutting machines Assignees: Gustavus Ames - Oswego, Oswego County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Aug. 13, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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