4. Boring or penetrating the earth
  5. With signaling, indicating, testing or measuring

Johannes Witte

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Adjustable angle pipe joint

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent

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Adjustable pipe joint

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent

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Apparatus and method of controlling motion and vibration of...

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Reexamination Certificate

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Apparatus and method of controlling motion and vibration of...

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Reexamination Certificate

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Downhole measurement of depth

Boring or penetrating the earth – With signaling – indicating – testing or measuring
Patent

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Profile ID: LFUS-PAI-P-898402

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