Granted Patent
Utility
US 5,490,500 · App. 08/255,653
Anesthetic evaporator with intermediate container
Inventors:
Dirk-Stefan Reichert, Gunther Hahmann, Wolfgang Falb
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Jun 8, 1994
Inventors
Dirk-Stefan Reichert
Gunther Hahmann
Wolfgang Falb
Assignee (at issue)
DRAGERWERK AKTIEGESELLSCHAFT
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.