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US Patent: 118,806
Improvement in augers
Patentees:
Edward P. Smith (exact or similar names) - Three Rivers, MI
Robert M. Lafferty (exact or similar names) - Three Rivers, MI

USPTO Classifications:
408/207

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James I. Day
H. S. Sprague

Patent Dates:
Granted: Sep. 12, 1871

Patent Pictures:
USPTO (New site tip)
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Description:
"The nature of this invention relates to certain improvement in the construction of hollow augers for boring pump-logs and other long wooden cylinders..."

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