73439315
Aug 15, 1983
Apr 16, 1985
Metal-Containers for Carburizing Liquid and for Liquid Forming Carrier Gas and Employed in Conjunction with Gas Carburizing Furnaces for Carburizing Steel Workpieces
Metal GoodsAutomatic Measuring and Control Units for Gas Carburizing Furnaces
Electrical and Scientific ApparatusGas Carburizing Furnaces for Carburizing Steel Workpieces and Parts Thereof
Environmental Control Apparatus