Granted Patent
Utility
US 5,383,889 · App. 07/959,259
Tethered everting balloon retractor for hollow bodies and method of using
Inventors:
Robert D. Warner, Albert K. Chin, Gail Stevens
Patented Case
View Patent ↗
Granted: Jan 24, 1995
Filed: Oct 9, 1992
Inventors
Robert D. Warner
Albert K. Chin
Gail Stevens
Assignee (at issue)
Origin Medsystems, 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.