US PATENT SUBCLASS 181 / 121
.~.~ Moving weight


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}
113  DF  .~ Seismic wave generation {5}
121.~.~ Moving weight


DEFINITION

Classification: 181/121

(under subclass 113) Subject matter wherein the seismic waves are generated by utilizing the kinetic energy of a moving inertial mass.