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US Patent: 13,261
Expanding auger or bit
Patentee:
L. H. Gibbs - Washington, DC

USPTO Classifications:
408/195, 408/212, 426/318

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

Assignees:
None

Manufacturer:
L. H. Gibbs - New York, NY

Witnesses:
Unknown

Patent Dates:
Granted: Jul. 17, 1855

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 | 6 ]
USPTO pdf tiff
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Description:
An example sold at auction in 2004 for $121.

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