79030727
Jul 14, 2006
Mar 4, 2008
Measuring and control devices for electric heaters, electric heating cables, and electronic controllers
Electrical and Scientific ApparatusElectrical heaters for industrial use; electric heating cables; units and apparatus for electrical heating of air, other gases and liquids, namely, electric pipe and electric tank trace heaters; electric pipe and electric tank trace heating systems comprising electrical heaters and structural parts thereof
Environmental Control Apparatus