Granted Patent
Utility
US 4,820,302 · App. 06/392,018
Bio compatible and blood compatible materials and methods
Inventor:
E. Aubrey Woodroof
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Jun 25, 1982
Inventor
E. Aubrey Woodroof
Assignee (at issue)
Sterling Drug, 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.