Granted Patent
Utility
US 5,743,883 · App. 08/476,690
Thoracentesis catheter instruments having self-sealing valves
Inventor:
Peter L. Visconti
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Jun 7, 1995
Inventor
Peter L. Visconti
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.