Granted Patent
Utility
US 4,923,442 · App. 07/343,850
Blood substitute
Inventors:
Paul E. Segall, Harold D. Waitz, Hal Sternberg
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Apr 26, 1989
Inventors
Paul E. Segall
Harold D. Waitz
Hal Sternberg
Assignee (at issue)
Cryomedical Sciences, 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.