Granted Patent
Utility
US 6,571,831 · App. 10/030,809
Flow regulator
Inventor:
Keith Hart
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Jan 11, 2002
Inventor
Keith Hart
Assignee (at issue)
Dieter Wildfang GmbH
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.