Granted Patent
Utility
US 5,197,977 · App. 07/877,344
Drug delivery collagen-impregnated synthetic vascular graft
Inventors:
Harmon Hoffman, Jr., Kemal Schankereli, Milos Chvapil
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Apr 30, 1992
Inventors
Harmon Hoffman, Jr.
Kemal Schankereli
Milos Chvapil
Assignee (at issue)
Meadox Medicals, 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.