Granted Patent
Utility
US 5,747,480 · App. 08/839,286
Oral contraceptive
Inventor:
Michael J. Gast
Patented Case
View Patent ↗
Granted: May 5, 1998
Filed: Apr 17, 1997
Inventor
Michael J. Gast
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.