Granted Patent
Utility
US 4,298,348 · App. 06/126,515
Time-temperature indicator composition
Inventor:
Dawn M. Ivory
Patented Case
View Patent ↗
Granted: Nov 3, 1981
Filed: Mar 3, 1980
Inventor
Dawn M. Ivory
Assignee (at issue)
ALLIED CONSULTING, INC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.