Granted Patent
Utility
US 5,690,607 · App. 08/675,694
Method for mechanical abdominal wall retraction
Inventors:
Albert K. Chin, Edmund K. M. Isoi
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Jul 3, 1996
Inventors
Albert K. Chin
Edmund K. M. Isoi
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.