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US Patent: 31,883
Hollow Auger
Patentee:
S. P. Gilbert (exact or similar names) - Racine, WI

USPTO Classifications:
408/67

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. E. Gilbert
L. H. Fellows
Patent Dates:
Granted: Apr. 02, 1861

Patent Pictures: [ 1 | 2 ]
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