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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 ]
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