Granted Patent
Utility
US 5,941,533 · App. 08/703,937
Volumetric pump/valve sphincter seal
Inventors:
Stephen C. Jacobsen, Clark C. Davis
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Aug 16, 1996
Inventors
Stephen C. Jacobsen
Clark C. Davis
Assignee (at issue)
Sarcos Corp.
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.