Granted Patent
Utility
US 5,618,297 · App. 08/322,698
Obturator with internal tip protector
Inventors:
Charles C. Hart, Vincent C. Tangherlini, Nabil Hilal
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Oct 13, 1994
Inventors
Charles C. Hart
Vincent C. Tangherlini
Nabil Hilal
Assignee (at issue)
Applied Medical Resources Corporation
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.