75442010
Feb 27, 1998
Apr 23, 2002
DEVICE CONTAINING A CHEMICAL SOLUTION FOR MEASURING THE QUALITY OF PERISHABLE AND PROCESSED FOODS, NAMELY A SMALL DEVICE IN THE FORM OF A PLASTIC TAG AFFIXED TO OR INTEGRATED WITH FOOD PACKAGING THAT REACTS TO TIME AND TEMPERATURE VARIABLES TO PROVIDE A VISUAL INDICATION OF THE QUALITY OF FOOD PRODUCTS
Electrical and Scientific Apparatus