Granted Patent
Utility
US 5,964,446 · App. 08/914,555
Elastomeric element valve
Inventors:
Herbert H. Walton, Douglas C. Pfantz, Gary L. Scott, William J. Bonzer
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Aug 19, 1997
Inventors
Herbert H. Walton
Douglas C. Pfantz
Gary L. Scott
William J. Bonzer
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.