Granted Patent
Utility
US 4,663,295 · App. 06/501,222
Estrogen-progesterone control reagents and methods for making same
Inventors:
Martha Vail, Robert E. Megraw, Michael K. Hoskins
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Jun 29, 1983
Inventors
Martha Vail
Robert E. Megraw
Michael K. Hoskins
Assignee (at issue)
Ciba Corning Diagnostics Corp.
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.