G - Physics – 01 – N
Patent
G - Physics
01
N
150/19, 116/67
G01N 25/00 (2006.01) G01K 1/02 (2006.01)
Patent
CA 1119082
ABSTRACT This invention relates to thermally responsive indicating devices. More particularly it relates to thermally responsive indicating devices which employ a class Or nitrogen-containing organic materials as a fusible locking means. The fusible locking means is solid at 20° C and is adapted to fuse at a predetermined temperature so as to release an indicating means which signals the attainment of the predetermined temperature. The class or organic materials utilized eliminates the need to employ toxic and expensive metal alloys as the locking means. The devices Or the invention are particularly useful in the preparation Or roods such as meats.
320415
Minnesota Mining And Manufacturing Company
Smart & Biggar
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