Granted Patent
Utility
US 5,083,461 · App. 07/491,042
Low friction trunnion bearing and high pressure seal
Inventor:
Richard J. Winkler
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Mar 8, 1990
Inventor
Richard J. Winkler
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.