Granted Patent
Utility
US 6,739,334 · App. 10/090,361
Expiration cassette that is removably insertable in the expiration section of a ventilation
Inventor:
Thomas Valeij
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Mar 4, 2002
Inventor
Thomas Valeij
Assignee (at issue)
Maquet Critical Care 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.