Granted Patent
Utility
US 5,405,328 · App. 08/123,319
Trocar with replaceable obturator
Inventors:
Claude Vidal, Russell J. Redmond, Gerald L. Metcalf
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Sep 17, 1993
Inventors
Claude Vidal
Russell J. Redmond
Gerald L. Metcalf
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.