Granted Patent
Utility
US 4,554,795 · App. 06/551,430
Compressor oil return system for refrigeration apparatus and method
Inventor:
Fayez F. Ibrahim
Patented Case
View Patent ↗
Granted: Nov 26, 1985
Filed: Nov 14, 1983
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.