Granted Patent
Utility
US 5,983,891 · App. 09/116,127
Artificial ventilation methods for controlling carbon dioxide rebreathing
Inventor:
Atsuo F. Fukunaga
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Jul 15, 1998
Inventor
Atsuo F. Fukunaga
Assignee (at issue)
Medlis 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.