Description
Class G01V : GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
Subclass 1/116: Seismology; Seismic or acoustic prospecting or detecting Generating seismic energy using explosive charges (G01V 1/157 takes precedence) where pressurised combustion gases escape from the generator in a pulsating manner, e.g. for generating bursts