Granted Patent
Utility
US 5,556,385 · App. 08/349,897
Improved percutaneous access device
Inventor:
Erik Andersen
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Dec 6, 1994
Inventor
Erik Andersen
Assignee (at issue)
Corpak, 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.