Granted Patent
Utility
US 4,190,047 · App. 05/828,073
Method and apparatus for peritoneal dialysis
Inventors:
Stephen C. Jacobsen, Robert L. Stephen, David F. Knutti, Carl Kablitz
Patented Case
View Patent ↗
Granted: Feb 26, 1980
Filed: Aug 26, 1977
Inventors
Stephen C. Jacobsen
Robert L. Stephen
David F. Knutti
Carl Kablitz
Assignee (at issue)
THE UNIVERSITY OF UTAH
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.