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US Patent: 113,651
Improvement in turning and boring-mills
Patentee: George A. Gray, Jr. (exact or similar names) - Cincinnati, OH USPTO Classifications: 82/122 Tool Categories: metalworking machines : drilling and boring : vertical boring mills Assignees: G. A. Gray Co. - Cincinnati, OH Manufacturer: Niles Tool Works - Cincinnati, OH Witnesses: Elitha F. Layman J. L. Wartmann	Patent Dates: Granted: Apr. 11, 1871 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Niles Tool Works

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