Granted Patent
Utility
US 5,476,792 · App. 08/395,700
Time-temperature indicator devices
Inventors:
Robert I. Ezrielev, Richard B. Barrett
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Feb 28, 1995
Inventors
Robert I. Ezrielev
Richard B. Barrett
Assignee (at issue)
Temple Division, Air Liquide America Corporation
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.