Granted Patent
Utility
US 5,501,214 · App. 08/312,468
Non-rebreathing valve and valve element therefor
Inventor:
Kristine K. Sabo
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Sep 26, 1994
Inventor
Kristine K. Sabo
Assignee (at issue)
Respironics, 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.