4. Cutting
  5. With means to monitor and control operation
  6. Including means to correct the sensed operation

W. Donald Gray

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Chipper-toothed hole saw

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

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Multi-stroke punch press with a means for correcting the immersi

Cutting – With means to monitor and control operation – Including means to correct the sensed operation
Patent

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