Granted Patent
Utility
US 5,474,539 · App. 08/015,349
Trocar with retracting tip
Inventors:
Peter Costa, William A. Holmes, Frederic H. Moll
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Feb 8, 1993
Inventors
Peter Costa
William A. Holmes
Frederic H. Moll
Assignee (at issue)
Origin Medsystems, 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.