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US Patent: 2,829,544
Countersinking and counterboring tool
Patentee: Walter C. Bergstrom (exact or similar names) - Cleveland, OH USPTO Classifications: 408/225 Tool Categories: metalworking machines : drilling and boring : drill bits : metalworking countersinks Assignees: Weldon Tool Co. - Cleveland, OH Manufacturer: Weldon Tool Co. - Cleveland, OH Witnesses: Unknown	Patent Dates: Applied: Dec. 07, 1953 Granted: Apr. 08, 1958 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Weldon Tool Co.

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