AL

CRYOGENIC APPARATUS AND PARTS THEREOF COMPRISING REFRIGERATION EQUIPMENT FOR PRODUCING AND MAINTAINING LOW AND ULTRA-LOW TEMPERATURES; INSTALLATIONS, EQUIPMENT AND APPARATUS OPERATING AT LOW AND ULTRA-LOW TEMPERATURES FOR LIQUEFYING AND/OR SEPARATING GASES, AND FOR DISTRIBUTING AND TRANSPORTING GASES IN A LIQUID STATE AT SAID TEMPERATURES; AND PARTS PARTICULARLY FOR SAID CRYOGENIC APPARATUS COMPRISING HEAT EXCHANGERS, CONDENSERS, VAPORIZERS AND LIQUEFIED GAS EVAPORATORS