Granted Patent
Utility
US 4,770,993 · App. 06/794,247
Hybridoma tumor cell lines and their monoclonal antibodies to thaumatin
Inventor:
Pradip Ghosh-Dastidar
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Oct 31, 1985
Inventor
Pradip Ghosh-Dastidar
Assignee (at issue)
Beatrice Companies, 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.