75746714
Jul 8, 1999
Oct 9, 2001
ELECTROLYTIC APPARATUS FOR PROTECTION AGAINST BIOLOGICAL FOULING AND ELECTROLYTIC CORROSION OF MARINE VESSELS AND STRUCTURES, SEAWATER INTAKES AND PIPING SYSTEMS, AND LAND BASED INSTALLATIONS WHICH CIRCULATE SEAWATER, AND FOR DESCALING BALLAST TANKS OF SHIPS; AND SENSORS AND CONTROL APPARATUS FOR SUCH ELECTROLYTIC APPARATUS
Electrical and Scientific Apparatus