Granted Patent
Utility
US 5,501,653 · App. 08/163,275
Abdominal wall lifting retractor with hinged cross-member
Inventor:
Albert K. Chin
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: Dec 6, 1993
Inventor
Albert K. Chin
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.