4. Motors: expansible chamber type
  5. Cyclically operable
  6. Distributor forms traversed movable portion of working...

Dennis R. Courtright

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Acoustic source array system for underwater operation

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent

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Acoustic source array system module for underwater operation...

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate

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Hydroacoustic apparatus and valving mechanisms for use therein

Motors: expansible chamber type – Cyclically operable – Distributor forms traversed movable portion of working...
Patent

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Hydroacoustic apparatus and valving mechanisms for use therein

Motors: expansible chamber type – Cyclically operable – Distributor forms traversed movable portion of working...
Patent

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Sonar system especially for shallow water application such...

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1226511

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