Granted Patent
Utility
US 5,823,540 · App. 08/719,721
Polymer reinforced fluid seal
Inventors:
Ted Dennis Grabau, Robert T. Wilson
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Sep 25, 1996
Inventors
Ted Dennis Grabau
Robert T. Wilson
Assignee (at issue)
Fisher Controls International 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.