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US Patent: 132,883
Improvement in Auger-Bits
Patentee:
Richard A. Whitmore - De Witt, AR

USPTO Classifications:
408/208

Tool Categories:
woodworking tools : hand drills : drill bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James B. Cook
H. F. Schulyre

Patent Dates:
Granted: Nov. 05, 1872

Patent Pictures:
USPTO pdf tiff
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