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Patent number:
Patent Date:
US Patent: 846,113
Manufacture of single-spiral augers
Patentee:
Andrew Krieger (
exact
or
similar
names) - Columbus, OH
USPTO Classifications:
72/376
,
76/102
Tool Categories:
tool making
:
making drills and augers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
M. B. Schley
A. L. Phelps
Patent Dates:
Applied:
Jan. 29, 1906
Granted:
Mar. 05, 1907
Patent Pictures:
USPTO
(New site tip)
Google Patents
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