US PATENT SUBCLASS 181 / 122
.~ Seismic wave detection

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


181 /   HD   ACOUSTICS

101  DF  GEOPHYSICAL OR SUBSURFACE EXPLORATION {5}
122.~ Seismic wave detection

DEFINITION

Classification: 181/122

(under subclass 101) Subject matter wherein the system includes means for mechanically receiving the acoustical waves.

SEE OR SEARCH CLASS

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

140+, for electrical geophysical vibration transducers.