Granted Patent
Utility
US 4,730,995 · App. 06/911,539
Screw compressor bearing arrangement with positive stop to accommodate thrust reversal
Inventor:
Randy E. Dewhirst
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Sep 25, 1986
Inventor
Randy E. Dewhirst
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.