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US Patent: 236,401
Detachable Lip for Augers
Patentees:
John R. Adams (exact or similar names) - Oakland, CA
Daniel Robertson (exact or similar names) - Oakland, CA

USPTO Classifications:
408/199

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. U. Mills
W. T. Rowlands

Patent Dates:
Applied: Nov. 05, 1880
Granted: Jan. 11, 1881

Patent Pictures: [ 1 | 2 ]
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