Granted Patent
Utility
US 6,726,663 · App. 09/523,659
Trocar with disposable valve and reusable cannula
Inventor:
William G. Dennis
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Mar 10, 2000
Inventor
William G. Dennis
Assignee (at issue)
Conmed Corporation
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.