Granted Patent
Utility
US 4,409,331 · App. 06/372,835
Preparation of substances with encapsulated cells
Inventor:
Franklin Lim
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Apr 28, 1982
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.