75820906
Oct 12, 1999
Jul 16, 2002
Electrochemical cells; electrolytic systems, namely, fuel cells and electrolyzers for energy conversion; electrochemical hydrogen generators for on-site production of gas in the chemical, pharmaceutical, food and fat hardening, electronic, metallurgy, and glass industries, and in power generating stations
Electrical and Scientific ApparatusGas generating installations for delivering hydrogen, oxygen, or chlorine to the chemical, pharmaceutical, food, metallurgy, and glass industries, and for waste and potable water treatments
Environmental Control Apparatus