Granted Patent
Utility
US 4,627,839 · App. 06/800,281
Patient controlled analgesia conversion
Inventor:
Joe W. Young
Patented Case
View Patent ↗
Granted: Dec 9, 1986
Filed: Nov 21, 1985
Inventor
Joe W. Young
Assignee (at issue)
American Hospital Supply Corp.
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.