Granted Patent
Utility
US 4,942,166 · App. 07/374,628
Crystalline purine compounds
Inventors:
Michael R. Harnden, Richard Jarvest, Graham Richard Geen
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Jun 30, 1989
Inventors
Michael R. Harnden
Richard Jarvest
Graham Richard Geen
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.