Granted Patent
Utility
US 5,142,963 · App. 07/782,408
Load referenced pressure reducing valve
Inventor:
Richard Paul Piekutowski
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Oct 25, 1991
Inventor
Richard Paul Piekutowski
Assignee (at issue)
Spectra-Physics Laserplane, 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.