Granted Patent
Utility
US 4,245,907 · App. 06/043,571
Disposable blood chamber
Inventor:
Julius S. Rosen
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: May 29, 1979
Inventor
Julius S. Rosen
Assignee (at issue)
American Optical 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.