4. Wells
  5. Means for perforating, weakening, bending or separating pipe...
  6. Cutter rotates circumferentially of pipe

Manfred Steinkamp

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Drill string anchor

Boring or penetrating the earth – With expansible bore wall anchor
Patent

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Drill string component

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Patent

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Oil well packer retriever

Wells – Means for perforating – weakening – bending or separating pipe... – Cutter rotates circumferentially of pipe
Patent

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Single trip whipstock assembly

Wells – Means for guiding insertable element laterally of well axis – Secured in operative position by movable means engaging well...
Patent

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Profile ID: LFUS-PAI-P-37983

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