Granted Patent
Utility
US 4,931,039 · App. 07/621,048
Ventricular catheter introducer
Inventors:
Frederick L. Coe, Michael E. Lachman
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: Oct 21, 1988
Inventors
Frederick L. Coe
Michael E. Lachman
Assignee (at issue)
Baxter International 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.