Granted Patent
Utility
US 5,006,539 · App. 07/319,052
Prostaglandins
Inventors:
Robert L. Jones, Norman H. Wilson
Patented Case
View Patent ↗
Granted: Apr 9, 1991
Filed: Mar 6, 1989
Inventors
Robert L. Jones
Norman H. Wilson
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.