Granted Patent
Utility
US 5,263,937 · App. 08/016,922
Trocar with profile to reduce insertion force
Inventor:
John I. Shipp
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Feb 11, 1993
Inventor
John I. Shipp
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.