4. Cutting by use of rotating axially moving tool
  5. Tool or tool with support
  6. Having peripherally spaced cutting edges

Fred T. Shallenberger

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Drill with replaceable cutting inserts

Cutting by use of rotating axially moving tool – Tool-support with means to permit positioning of the tool... – Pivotable tool
Patent

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Elongated drill with replaceable cutting inserts

Cutting by use of rotating axially moving tool – Tool or tool with support – Having peripherally spaced cutting edges
Patent

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Spade blade drill and method of making

Cutting by use of rotating axially moving tool – Tool or tool with support – Having peripherally spaced cutting edges
Reexamination Certificate

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Profile ID: LFUS-PAI-P-160430

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