Granted Patent
Utility
US 4,621,502 · App. 06/690,606
Electronic temperature control for refrigeration system
Inventors:
Fayez F. Ibrahim, Kwok Kwong Fung
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Jan 11, 1985
Inventors
Fayez F. Ibrahim
Kwok Kwong Fung
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.