Granted Patent
Utility
US 4,126,620 · App. 05/772,003
Cyclopenta (C) pyrrole derivatives
Inventors:
Malcolm R. Bell, Rudolf Oesterlin
Patented Case
View Patent ↗
Granted: Nov 21, 1978
Filed: Feb 25, 1977
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.