I POINT

CHEMICAL REAGENT CONTAINING INDICATORS, ESPECIALLY IN THE FORM OF TAGS AND LABELS, FOR INDICATING BY A CHANGED NATURE OF THE REAGENT THE STATE OF OR CONDITION OF FOOD, CHEMICALS, PHARMACEUTICALS, SOLUTIONS OR OTHER PRODUCTS, AND IN PARTICULAR SUCH INDICATORS FOR INDICATING THE TIME FOR WHICH THE PRODUCT HAS BEEN PACKED AND/OR THE TEMPERATURES THROUGH WHICH THE PRODUCT HAS PASSED

MEASURING AND CONTROLLING APPARATUS AND INSTRUMENTS, NAMELY, THERMOMETERS AND TEMPERATURE INDICATORS UTILIZING ENZYMATIC REACTIONS FOR DISPLAYING TEMPERATURE LIMITS BY COLOR CHANGE.