Granted Patent
Utility
US 4,475,568 · App. 06/478,125
Pressure reducing and regulating valve
Inventor:
Ronald L. Loup
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Mar 22, 1983
Inventor
Ronald L. Loup
Assignee (at issue)
Koomey, 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.