Granted Patent
Utility
US 6,080,174 · App. 08/424,696
Trocar system having expandable port
Inventors:
William Dubrul, Craig Tsuji
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Apr 19, 1995
Inventors
William Dubrul
Craig Tsuji
Assignee (at issue)
Innerdyne, 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.