73682125
Sep 2, 1987
Jun 26, 1990
FREEZERS; FREEZER TUNNELS; CARBON DIOXIDE (DRY ICE) STORAGE UNITS; MACHINES FOR GENERATING DRY ICE; UNITS FOR PROCESSING CARBON DIOXIDE LIQUID INTO VAPOR; DRY ICE EXTRUDERS FOR USE IN MAKING CARBON DIOXIDE PELLETS; CARBON DIOXIDE VAPOR RECOVERY UNIT
Environmental Control Apparatus