Granted Patent
Utility
US 5,010,070 · App. 07/526,934
Graduated estrogen contraceptive
Inventor:
Roger M. Boissonneault
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: May 22, 1990
Inventor
Roger M. Boissonneault
Assignee (at issue)
WARNER-LAMBERT COMPANY LLC
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.