Granted Patent
Utility
US 5,428,151 · App. 08/239,187
Medrogestrone production
Inventors:
Michael W. Winkley, Robert D. Mitchell
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: May 5, 1994
Inventors
Michael W. Winkley
Robert D. Mitchell
Assignee (at issue)
Amerimas Home Products, 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.