4. Seal for a joint or juncture
  5. Seal between relatively movable parts
  6. Relatively rotatable radially extending sealing face member

Gerhard Heidemann

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High pressure sealing means for longitudinally movable parts of

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Locking device for a tool with telescopically displaceable parts

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent

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Mechanical jarring devices for use in drilling

Boring or penetrating the earth – Below-ground impact members – Resiliently biased
Patent

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Profile ID: LFUS-PAI-P-1144050

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