4. Communications, electrical: acoustic wave systems and devices
  5. Transponders
  6. With plurality of transponders

Christopher N. Sears

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Propeller unit with controlled cyclic and collective blade pitch

Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent

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Underwater acoustic data acquisition system

Communications – electrical: acoustic wave systems and devices – Transponders – With plurality of transponders
Patent

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Profile ID: LFUS-PAI-P-776218

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