Granted Patent
Utility
US 5,246,421 · App. 07/834,602
Method of treating obstructed regions of bodily passages
Inventor:
Mark A. Saab
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Feb 12, 1992
Inventor
Mark A. Saab
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.