Granted Patent
Utility
US 6,709,405 · App. 10/245,898
Breathing apparatus and method for operation thereof for examining pulmonary mechanics of a respiratory system
Inventor:
Bjorn Jonson
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Sep 17, 2002
Inventor
Bjorn Jonson
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.