Granted Patent
Utility
US 4,906,264 · App. 07/406,453
Oil separator for separating and collecting oil entrained in refrigerant
Inventors:
Paul G. Szymaszek, Robert J. Schintgen
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Sep 13, 1989
Inventors
Paul G. Szymaszek
Robert J. Schintgen
Assignee (at issue)
Vilter Manufacturing LLC
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.