Granted Patent
Utility
US 4,776,837 · App. 07/033,858
Single lumen catheter fluid treatment
Inventor:
Klaus Kopp
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Apr 6, 1987
Inventor
Klaus Kopp
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.