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US Patent: 159,164
Improvement in boring-machines
Patentee: George Dryden (exact or similar names) - Worcester, MA USPTO Classifications: 408/111 Tool Categories: metalworking machines : drilling and boring : drill presses woodworking machines : wood drilling and boring : drill presses Assignees: None Manufacturer: Not known to have been produced Witnesses: Daniel Greene William Ball	Patent Dates: Applied: May 31, 1872 Granted: Jan. 26, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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