Granted Patent
Utility
US 5,720,278 · App. 08/756,691
Inverse proportional assist ventilation apparatus
Inventors:
Burkhard Lachmann, Govinda Rajan
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Nov 26, 1996
Inventors
Burkhard Lachmann
Govinda Rajan
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.