Granted Patent
Utility
US 5,312,431 · App. 07/767,812
Occlusive cuff
Inventor:
James A. McEwen
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Sep 30, 1991
Inventor
James A. McEwen
Assignee (at issue)
Abatis Medical Technologies Limited
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.