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US Patent: 1,479,124
Counterboring or counterfacing tool
Patentee:
Frank D. Winkley (exact or similar names) - Chicago, IL

USPTO Classifications:
408/198, 411/405

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 29, 1922
Granted: Jan. 01, 1924

Patent Pictures:
USPTO (New site tip)
Google Patents
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