Granted Patent
Utility
US 5,024,203 · App. 07/571,322
PCV oil separator system
Inventor:
Stephen H. Hill
Patented Case
View Patent ↗
Granted: Jun 18, 1991
Filed: Aug 22, 1990
Inventor
Stephen H. Hill
Assignee (at issue)
Sealed Power Technologies, L.P.
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.