71423019
Aug 25, 1939
Mar 5, 1940
VACUUM OR GAS-FILLED TUBES EMPLOYED FOR THE GENERATION OF RADIATIONS FOR HASTENING THE TENDERIZATION OF MEAT, IN SHOWCASES AND DOMESTIC REFRIGERATORS TO PREVENT FORMATION OF MOLDS, AND FOR KILLING AIR-BORNE MICRO-ORGANISMS IN HOSPITAL OPERATING ROOMS TO REDUCE THE CONTAMINATION LEVEL OF THE AIR
Housewares and Glass