Granted Patent
Utility
US 5,447,863 · App. 08/126,492
Method for purifying islets of langerhans
Inventor:
Robert W. Langley
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Nov 2, 1993
Inventor
Robert W. Langley
Assignee (at issue)
Cobe Laboratories, 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.