Granted Patent
Utility
US 4,519,579 · App. 06/466,186
Cam valve self-centering seat
Inventors:
Ronald R. Brestel, Dale L. Meyer
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Feb 14, 1983
Inventors
Ronald R. Brestel
Dale L. Meyer
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.