US PATENT SUBCLASS 367 / 63
.~.~.~.~ With preliminary signal processing

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

14  DF  SEISMIC PROSPECTING {4}
37  DF  .~ Land-reflection type {6}
38  DF  .~.~ Signal analysis and/or correction {15}
59  DF  .~.~.~ Compositing system {4}
63.~.~.~.~ With preliminary signal processing

DEFINITION

Classification: 367/63

With preliminary signal processing:

(under subclass 59) Subject matter wherein the signals are modified before being combined.