US PATENT SUBCLASS 181 / 118
.~.~.~.~ Underwater

Current as of: June, 1999
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181 /   HD   ACOUSTICS

101  DF  GEOPHYSICAL OR SUBSURFACE EXPLORATION {5}
113  DF  .~ Seismic wave generation {5}
116  DF  .~.~ Explosive {1}
117  DF  .~.~.~ Gas {1}
118.~.~.~.~ Underwater

DEFINITION

Classification: 181/118

(under subclass 117) Subject matter wherein the seismic waves are produced and coupled to a body of water.