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US Patent: 1,019,639
Belt-tightener for drills
Patentee: Fred K. Hendrickson (exact or similar names) - Worcester, MA USPTO Classifications: 474/61, 474/89 Tool Categories: metalworking machines : drilling and boring : drill presses woodworking machines : wood drilling and boring : drill presses Assignees: Prentice Bros. Co. - Worcester, MA Manufacturer: Prentice Bros. Co. - Worcester, MA Witnesses: Albert E. Fay C. Forrest Wesson	Patent Dates: Applied: Oct. 20, 1910 Granted: Mar. 05, 1912 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Prentice Bros.

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