Granted Patent
Utility
US 6,454,783 · App. 09/397,630
Laparoscopic instruments and trocar systems for trans-umbilical laproscopic surgery
Inventor:
Gregory Piskun
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Sep 15, 1999
Inventor
Gregory Piskun
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.