US PATENT SUBCLASS 367 / 31
.~.~.~ Of noncompressional acoustic wave energy

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

14  DF  SEISMIC PROSPECTING {4}
25  DF  .~ Well logging {6}
28  DF  .~.~ Amplitude measurement {4}
31.~.~.~ Of noncompressional acoustic wave energy

DEFINITION

Classification: 367/31

Of noncompressional acoustic wave energy:

(under subclass 28) Subject matter wherein the energy of propagating stresses other than compressional stresses is measured.

(1) Note. Propagating stresses of this subclass type include shear waves, surface waves (which may be referred to as "Rayleigh", "Love", "tube" or "Stoneley" waves), and refracted waves (which may be referred to as "head" or "conical" waves).