Granted Patent
Utility
US 5,037,385 · App. 07/424,165
Continuous ambulatory peritoneal dialysis method
Inventor:
Paul O'Byrne
Patented Case
View Patent ↗
Granted: Aug 6, 1991
Filed: Oct 23, 1989
Inventor
Paul O'Byrne
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.