Granted Patent
Utility
US 4,825,860 · App. 07/186,691
Device for supplying anesthetic dispensing systems
Inventors:
Wolfgang Falb, Martin Ryschka, Carl F. Wallroth
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Apr 21, 1988
Inventors
Wolfgang Falb
Martin Ryschka
Carl F. Wallroth
Assignee (at issue)
Draegerwerk Aktiengesellschaft
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.