Granted Patent
Utility
US 4,933,288 · App. 06/934,248
Use of a modified soluble Pseudomonas exotoxin A in immunoconjugates
Inventor:
I. Lawrence Greenfield
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Nov 21, 1986
Inventor
I. Lawrence Greenfield
Assignee (at issue)
Cetus 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.