Granted Patent
Utility
US 4,157,965 · App. 05/644,451
Blood treating device
Inventor:
Donald A. Raible
Patented Case
View Patent ↗
Granted: Jun 12, 1979
Filed: Dec 29, 1975
Inventor
Donald A. Raible
Assignee (at issue)
Bentley Laboratories, 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.