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Patent number:
Patent Date:
US Patent: 100,440
Improvement in auger for boring square holes
Patentee:
Alfred T. Perrine (
exact
or
similar
names) - Louisville, KY
USPTO Classifications:
408/30
Tool Categories:
metalworking machines
:
drilling and boring
:
drill bits
woodworking tools
:
chisels
:
mortise chisels
woodworking tools
:
hand drills
:
drill bits
Assignees:
Alfred T. Perrine
- Louisville, KY
William C. Chase
- Providence, RI
Manufacturer:
Not known to have been produced
Witnesses:
J. Erastus Lester
George H. McCann
Patent Dates:
Granted:
Mar. 01, 1870
Patent Pictures:
USPTO
(New site tip)
Google Patents
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