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US Patent: 121,707
Improvement in Hollow Augers
Patentee:
William A. Clark (exact or similar names) - Woodbridge, CT

USPTO Classifications:
30/495

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fred. Haynes
Ferd. Tusch
Patent Dates:
Granted: Dec. 12, 1871

Reissue Information:
Reissued as RE5,393 (May 06, 1873)

Patent Pictures:
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