4. Radiant energy
  5. Photocells; circuits and apparatus
  6. Optical or pre-photocell system

John Lee

Attorney

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Measuring system with sweeping comb filter and multiplexer

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate

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Measuring wellbore diameter with an LWD instrument using...

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

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Profile ID: LFUS-PAI-P-2825983

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