4. Boring or penetrating the earth
  5. With signaling, indicating, testing or measuring
  6. Indicating, testing or measuring a condition of the formation

Daryl L. Pritchard

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Expandable reamer apparatus for enlarging boreholes while...

Boring or penetrating the earth – Processes
Reexamination Certificate

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Expandable reamer apparatus for enlarging boreholes while...

Wells – Processes – Distinct – separate injection and producing wells
Reexamination Certificate

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Expandable reamer apparatus for enlarging subterranean...

Boring or penetrating the earth – Processes
Reexamination Certificate

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Method and apparatus for collecting drill bit performance data

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

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Method and apparatus for collecting drill bit performance data

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2390895

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