4. Organic compounds -- part of the class 532-570 series
  5. Organic compounds
  6. Heterocyclic carbon compounds containing a hetero ring...

Hitoshi Sugiyama

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Acoustic isolator between downhole transmitters and receivers

Acoustics – Geophysical or subsurface exploration – Seismic source and detector
Reexamination Certificate

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Acoustic logging tool

Acoustics – Geophysical or subsurface exploration – Well logging
Reexamination Certificate

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Acoustic logging tool

Acoustics – Geophysical or subsurface exploration – Well logging
Reexamination Certificate

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Active positioning of downhole devices using spherical motors

Geometrical instruments – Indicator of direction of force traversing natural media – Process
Reexamination Certificate

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Cable fault location method with discharge delay compensation us

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent

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Profile ID: LFUS-PAI-P-987871

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