Granted Patent
Utility
US 4,293,409 · App. 05/964,275
Artificial kidney dialysate preparation system
Inventors:
Gerhard Riede, Lars-Ake Larsson, Roland Andersson, Sven A. Josson, Lars J. C. Traven
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Nov 28, 1978
Inventors
Gerhard Riede
Lars-Ake Larsson
Roland Andersson
Sven A. Josson
Lars J. C. Traven
Assignee (at issue)
Gambro 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.