Granted Patent
Utility
US 5,497,767 · App. 08/188,763
Method and apparatus for supplying fresh gas to a patient during manual ventilation
Inventors:
Sven-Gunnar Olsson, Goeran Cewers, Goeran Rydgren
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Jan 31, 1994
Inventors
Sven-Gunnar Olsson
Goeran Cewers
Goeran Rydgren
Assignee (at issue)
Siemens Elema AB
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.