Granted Patent
Utility
US 4,391,909 · App. 06/259,595
Microcapsules containing viable tissue cells
Inventor:
Franklin Lim
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: May 1, 1981
Inventor
Franklin Lim
Assignee (at issue)
Damon Corporation
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.