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US Patent: 341,165
Convertable Drill Press or Slotting Machine
Patentee:
Laurence H. Pierson - San Francisco, CA

USPTO Classifications:
29/26R, 409/334

Tool Categories:
metalworking machines : drilling and boring : drill presses
metalworking machines : metal slotting machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 23, 1885
Granted: May 04, 1886

Patent Pictures:
USPTO pdf tiff
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