74002148
Nov 16, 1989
Oct 1, 1991
COMPUTER CONTROLLED GEOLOGICAL, GEOPHYSICAL, AND GEOTECHNICAL ELECTRONIC MEASURING INSTRUMENTS; NAMELY, PARTICLE SIZE ANALYZERS, ROCK ANALYZERS, WATER RADON ANALYZERS AND TUNNEL SURVEY UNITS, AND COMPUTER SOFTWARE FOR USE IN GEOLOGICAL, GEOPHYSICAL AND GEOTECHNICAL APPLICATIONS
Electrical and Scientific Apparatus