4. Abrasive tool making process, material, or composition
  5. Impregnating or coating an abrasive tool

Pierre Harmand

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Apparatus and method for machining valve seats in an engine cyli

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Frictionally engaging sides of opening in work
Patent

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Apparatus and method for machining valve seats in an engine cyli

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent

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Apparatus for machining valve seats in an engine cylinder head

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Frictionally engaging sides of opening in work
Patent

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Contour machining head

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Reexamination Certificate

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Cutting tool and method for machining valve seats

Cutting by use of rotating axially moving tool – Processes – Bit detachable
Reexamination Certificate

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Profile ID: LFUS-PAI-P-251764

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