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US Patent: 1,070,425
Countersinking drill
Patentee:
Albert C. Darling, Jr. (exact or similar names) - Lodi, NY

USPTO Classifications:
408/223, 408/224

Tool Categories:
woodworking tools : hand drills : drill bits : countersinks

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Richard P. Farr
S. Maud Myer

Patent Dates:
Applied: Oct. 21, 1911
Granted: Aug. 19, 1913

Patent Pictures:
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