Granted Patent
Utility
US 4,424,685 · App. 06/256,996
Automated energy conserving cover for refrigerated cabinet access openings
Inventor:
Fayez F. Ibrahim
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Apr 24, 1981
Inventor
Fayez F. Ibrahim
Assignee (at issue)
Tyler Refrigeration 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.