75598553
Dec 3, 1998
Jul 4, 2000
PRODUCTION-LINE SENSORS FOR MEASURING PHYSICAL VALUES OF LOW-CONDUCTIVE AND NON-CONDUCTIVE FLUIDS, FOR DETERMINING THE DEGREE OF CONTAMINATION, THE INGRESS OF FINEST CONTAMINATIONS, THE DIELECTRIC NUMBER AND THE PERMEABILITY
Electrical and Scientific ApparatusINDUSTRIAL PLANTS FOR IMPROVING AND PURIFYING AIR; PLATE FILTERS FOR FINEST FILTRATION OF LIQUID QUANTITIES
Environmental Control Apparatus