Granted Patent
Utility
US 4,226,124 · App. 06/026,621
Pressure isolator
Inventor:
Jean Kersten
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: Apr 2, 1979
Inventor
Jean Kersten
Assignee (at issue)
Baxter Travenol 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.