4. Communications: radio wave antennas
  5. Antennas
  6. Buried underground or submerged under water

Jian-Qun Wu

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Acoustic logging system using fiber optics

Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent

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Apparatus and method of seismic sensing systems using fiber...

Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate

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Calculating directional drilling tool face offsets

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

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Directional sensor system comprising a single axis sensor...

Geometrical instruments – Indicator of direction of force traversing natural media – Borehole direction or inclination
Reexamination Certificate

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Directional sensor system comprising a single axis sensor...

Geometrical instruments – Indicator of direction of force traversing natural media – Borehole direction or inclination
Reexamination Certificate

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Profile ID: LFUS-PAI-P-429324

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