Granted Patent
Utility
US 5,704,372 · App. 08/282,287
Endoscopic inflatable retraction devices for separating layers of tissue, and methods of using
Inventors:
Frederic H. Moll, Jeffrey A. Smith, John P. Lunsford, Albert K. Chin
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Jul 29, 1994
Inventors
Frederic H. Moll
Jeffrey A. Smith
John P. Lunsford
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.