Granted Patent
Utility
US 5,361,752 · App. 07/877,995
Retraction apparatus and methods for endoscopic surgery
Inventors:
Frederic H. Moll, Albert K. Chin
Patented Case
View Patent ↗
Granted: Nov 8, 1994
Filed: May 4, 1992
Inventors
Frederic H. Moll
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.