4. Boring or penetrating the earth
  5. With tool shaft detail
  6. Axially telescoping shaft section

Carl Allison Perry

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Electrical connections for harsh conditions

Electrical connectors – Including or for use with coaxial cable
Reexamination Certificate

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Latching system for maintaining position of component within...

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

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Power-generating device for use in drilling operations

Boring or penetrating the earth – With below-ground tool drive prime mover – Electric
Reexamination Certificate

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System and method for damping vibration in a drill string

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section
Reexamination Certificate

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System and method for damping vibration in a drill string

Boring or penetrating the earth – With tool shaft detail – Axially telescoping shaft section
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2410587

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