Granted Patent
Utility
US 4,632,591 · App. 06/621,836
Radially expandable O-ring connector
Inventor:
Eugene H. Fullenkamp
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Jun 18, 1984
Inventor
Eugene H. Fullenkamp
Assignee (at issue)
HILL-ROM, INC.
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.