Granted Patent
Utility
US 4,524,152 · App. 06/454,759
1-Cyano-3-(fluoroalkyl)guanidines for lowering blood pressure
Inventors:
Stephen J. Riggi, Robert Neville Haszeldine
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Dec 30, 1982
Inventors
Stephen J. Riggi
Robert Neville Haszeldine
Assignee (at issue)
Pennwalt 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.