Granted Patent
Utility
US 4,762,469 · App. 06/835,575
Rotor anti-reverse rotation arrangement in a screw compressor
Inventor:
James C. Tischer
Patented Case
View Patent ↗
Granted: Aug 9, 1988
Filed: Mar 3, 1986
Inventor
James C. Tischer
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.