Granted Patent
Utility
US 4,349,021 · App. 06/158,063
Atraumatic blood access device valve
Inventor:
Donald A. Raible
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: Jun 9, 1980
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.