Granted Patent
Utility
US 4,350,161 · App. 06/148,340
Indwelling urethral catheter and method
Inventor:
Richard C. Davis
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: May 9, 1980
Inventor
Richard C. Davis
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.