Granted Patent
Utility
US 6,192,885 · App. 09/333,712
Method for controlling an expiratory valve in a ventilator
Inventor:
Fredrik Jalde
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Jun 15, 1999
Inventor
Fredrik Jalde
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.