Granted Patent
Utility
US 4,439,521 · App. 06/313,494
Method for producing self-reproducing mammalian pancreatic islet-like structures
Inventors:
Michael C. Archer, Kanti Jain
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Oct 21, 1981
Inventors
Michael C. Archer
Kanti Jain
Assignee (at issue)
Ontario Cancer Institute
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.