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US Patent: 1,398,779
Tool for boring and counterboring wood
Patentee: Louis S. Hayden (exact or similar names) - Essex, CT USPTO Classifications: 408/192 Tool Categories: metalworking machines : drilling and boring : drill bits woodworking tools : hand drills : drill bits Assignees: Connecticut Valley Mfg. Co. - Centerbrook, CT Manufacturer: Connecticut Valley Mfg. Co. - Centerbrook, CT Witnesses: Unknown	Patent Dates: Applied: Apr. 23, 1921 Granted: Nov. 29, 1921 Patent Pictures: [ 1 | 2 | 3 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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