Granted Patent
Utility
US 4,957,733 · App. 07/126,406
Pharmaceutical products
Inventors:
Martin Cole, Malcolm Richard Boyd, David Sutton
Patented Case
View Patent ↗
Granted: Sep 18, 1990
Filed: Nov 30, 1987
Inventors
Martin Cole
Malcolm Richard Boyd
David Sutton
Assignee (at issue)
Beecham Group plc
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.