4. Metal tools and implements, making
  5. Blank or process
  6. Drill

Derrick Merrill

Inventor

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Annular hole cutter

Cutting by use of rotating axially moving tool – Tool or tool with support – Having axial – core-receiving central portion
Patent

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Annular hole cutter

Metal tools and implements – making – Blank or process – Drill
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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Profile ID: LFUS-PAI-P-1188415

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