71541840
Nov 20, 1947
Nov 22, 1949
FABRICATED INSULATING BARRIERS AND MATERIALS FOR SUCH BARRIERS, INCLUDING SHEET ALUMINUM INSULATION AND VAPOR BARRIERS, COMPRISING SELF-SUSTAINING, NON-POROUS, HEAT-REFLECTIVE SHEETS OF ALUMINUM USEED FOR INSULATING BARRIERS FOR REFRIGERATED STRUCTURES, INSULATING BARRIERS FOR STRUCTURES EXPOSED TO HIGH TEMPERATURES, AND INSULATING BARRIERS FOR EQUIPMENT AND PIPES OPERATED AT REFRIGERATING OR HIGH TEMPERATURES
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