Granted Patent
Utility
US 5,316,262 · App. 07/828,729
Fluid restrictor apparatus and method for making the same
Inventor:
Douglas J. Koebler
Patented Case
View Patent ↗
Granted: May 31, 1994
Filed: Jan 31, 1992
Inventor
Douglas J. Koebler
Assignee (at issue)
Suprex Corporation
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.