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US Patent: 372,730
Centering Device
Patentee:
Harlan P. Wellman (exact or similar names) - Catlettsburg, Boyd County, KY

USPTO Classifications:
408/105

Tool Categories:
metalworking machines : drilling and boring : center drilling machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 04, 1887
Granted: Nov. 08, 1887

Patent Pictures:
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