Granted Patent
Utility
US 5,292,802 · App. 07/985,680
Collagen-polymer tubes for use in vascular surgery
Inventors:
Woonza M. Rhee, Kimberly A. McCullough
Patented Case
View Patent ↗
Granted: Mar 8, 1994
Filed: Dec 2, 1992
Inventors
Woonza M. Rhee
Kimberly A. McCullough
Assignee (at issue)
COLLAGEN 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.