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US Patent: 1,379,539
Tool Holder
Patentee:
John J. Dolan (exact or similar names) - Duquesne, Allegheny County, PA

USPTO Classifications:
82/158

Tool Categories:
metalworking machines : drilling and boring : drilling and boring tool holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 15, 1919
Granted: May 24, 1921

Patent Pictures:
USPTO (New site tip)
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