US PATENT SUBCLASS 367 / 57
.~.~.~.~ Vertical receiver or source array

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}
56  DF  .~.~.~ Particular source-receiver array {1}
57.~.~.~.~ Vertical receiver or source array

DEFINITION

Classification: 367/57

Vertical receiver or source array:

(under subclass 56) Subject matter wherein a plurality of receivers or sources are spaced from one another radially with respect to the center of the earth.