US PATENT SUBCLASS 367 / 18
.~.~.~ Fluid variation

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

14  DF  SEISMIC PROSPECTING {4}
15  DF  .~ Offshore prospecting {4}
16  DF  .~.~ Transducer position control {2}
18.~.~.~ Fluid variation

DEFINITION

Classification: 367/18

Fluid variation:

(under subclass 16) Subject matter wherein the position of the transducer is controlled by varying the bouyancy of the transducer or of structure attached to it (e.g., towing cable).