4. Radiant energy
  5. Geological testing or irradiation
  6. Well testing apparatus and methods

Patrick J. Fisseler

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Apparatus and method for drawing fluid into a downhole tool

Measuring and testing – Borehole or drilling – Fluid flow measuring or fluid analysis
Reexamination Certificate

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Method and apparatus for determining downhole pressures...

Measuring and testing – Borehole or drilling – During drilling
Reexamination Certificate

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Method and apparatus for safely operating radiation...

Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2656461

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