Granted Patent
Utility
US 4,422,939 · App. 06/366,747
Blood and perfusate filter
Inventors:
Russell G. Sharp, William R. Wilkinson, Charles C. Reed, Denton A. Cooley
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Apr 8, 1982
Inventors
Russell G. Sharp
William R. Wilkinson
Charles C. Reed
Denton A. Cooley
Assignee (at issue)
Texas Medical Products, 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.