Granted Patent
Utility
US 4,220,763 · App. 06/063,108
Cyclopenta[o]pyrrole derivatives
Inventors:
Malcolm R. Bell, Rudolf Oesterlin
Patented Case
View Patent ↗
Granted: Sep 2, 1980
Filed: Aug 2, 1979
Inventors
Malcolm R. Bell
Rudolf Oesterlin
Assignee (at issue)
Sterling Drug, 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.