US PATENT SUBCLASS 181 / 101
GEOPHYSICAL OR SUBSURFACE EXPLORATION

Current as of: June, 1999
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181 /   HD   ACOUSTICS

101GEOPHYSICAL OR SUBSURFACE EXPLORATION {5}
102  DF  .~> Well logging {4}
107  DF  .~> Programmed or timer-controlled
108  DF  .~> Seismic source and detector {4}
113  DF  .~> Seismic wave generation {5}
122  DF  .~> Seismic wave detection

DEFINITION

Classification: 181/101

(under the class definition) Subject matter relating to systems for mechanically transmitting or receiving acoustical waves for the purpose of identifying geologic or subsurface structure.

(1) Note. Subsurface is defined as including anything, whether composition, article, structure or formation which lies below the upper natural surface of the earth.

(2) Note. Acoustical waves are considered to include seismic waves for the purposes of this section.

(3) Note. In scope, this subclass is analogous to Class 367 Communications Electrical: Acoustic Wave Systems and Devices subclasses 25+ and 853.1+ wherein electrical communication,

in part or in whole, is involved.

SEE OR SEARCH THIS CLASS, SUBCLASS:

124, for depth sounding related to sound echo compressional wave systems. SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

323+, for geophysical surface or subsurface exploration in situ generally.

340, Communications: Electrical,

853.8, for a wellbore telemetering system.

367, Communications, Electrical: Acoustic Wave Systems and Devices,

14+, for seismic prospecting using electrical acoustic wave systems.