Granted Patent
Utility
US 5,540,732 · App. 08/310,120
Method and apparatus for impedance detecting and treating obstructive airway disorders
Inventor:
Roy L. Testerman
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Sep 21, 1994
Inventor
Roy L. Testerman
Assignee (at issue)
Medtronic, 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.