73352388
Mar 1, 1982
Jun 14, 1983
Titanium, Zirconium, and Tantalum in Bar, Sheet and Wire Form; Metal Tanks and Vessels; Metal Structural Columns
Metal GoodsElectrolytic Cell Components Comprising Anodes, Electrodes, Housings, Bus Bars and Electrolytic Cell Gas Headers Included in Membrane and Diaphragm Cells for Chlorine and/or Chlorate Production
Electrical and Scientific ApparatusShell and Tube Heat Exchangers for Use in the Chemical Processing Industry; Condensers for Use in the Chemical Processing Industry; Coils; Plumbing Equipment-Namely, Metal Pipes
Environmental Control Apparatus