Granted Patent
Utility
US 5,397,098 · App. 07/922,637
Modulating valve
Inventor:
Michael Schreiner
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: Jul 30, 1992
Inventor
Michael Schreiner
Assignee (at issue)
Erie Manufacturing 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.