US PATENT SUBCLASS 367 / 9
.~.~ Seismic display

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

7  DF  ACOUSTIC IMAGE CONVERSION {2}
8  DF  .~ Acoustic holography {2}
9.~.~ Seismic display

DEFINITION

Classification: 367/9

Seismic display:

(under subclass 8) Subject matter wherein the reflected or defracted acoustic waves travel through the earth.