Granted Patent
Utility
US 5,020,568 · App. 07/517,102
Unitized disc flow control assembly for a restrictor valve
Inventor:
Julian S. Taylor
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: May 1, 1990
Inventor
Julian S. Taylor
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.