Granted Patent
Utility
US 5,984,902 · App. 09/039,620
Outdwelling slit valve and variable control for controlling opening and closing the slit
Inventor:
H. Robert Moorehead
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Mar 16, 1998
Inventor
H. Robert Moorehead
Assignee (at issue)
Catheter Innovations, 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.