Granted Patent
Utility
US 4,927,339 · App. 07/260,153
Rotating scroll apparatus with axially biased scroll members
Inventors:
Delmar R. Riffe, Peter A. Kotlarek, Robert E. Utter
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Oct 14, 1988
Inventors
Delmar R. Riffe
Peter A. Kotlarek
Robert E. Utter
Assignee (at issue)
American Standard Inc.
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.