4. Radiant energy
  5. Coded record and readers; invisible radiant energy type

Jean-Michel Hache

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Apparatus and method for acquiring information while drilling

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

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Apparatus and method for actively cooling instrumentation in...

Wells – Processes – Heating – cooling or insulating
Reexamination Certificate

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Apparatus and method for aquiring information while drilling

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Apparatus and method for generating electrical power in a...

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Reexamination Certificate

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Downhole drilling apparatus and method for using same

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

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Profile ID: LFUS-PAI-P-186842

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