4. Boring or penetrating the earth
  5. With signaling, indicating, testing or measuring
  6. Tool position direction or inclination measuring or...

Randell Riggs

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Gyroscopic steering tool using only a two-axis rate...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate

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Gyroscopic steering tool using only a two-axis rate...

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

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Profile ID: LFUS-PAI-P-3116987

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