Granted Patent
Utility
US 5,364,372 · App. 08/038,904
Trocar and cannula
Inventors:
John K. Danks, Richard V. Mazzola
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Mar 29, 1993
Inventors
John K. Danks
Richard V. Mazzola
Assignee (at issue)
Endoscopic Concepts, Inc.
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.