Granted Patent
Utility
US 5,881,757 · App. 08/850,180
Pressure regulator apparatus and method
Inventors:
Arlene Kuster, Mark Healy, William McFadden
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: May 2, 1997
Inventors
Arlene Kuster
Mark Healy
William McFadden
Assignee (at issue)
Senninger Irrigation, 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.