Granted Patent
Utility
US 4,831,013 · App. 07/020,055
2-substituted-e-fused-[1,2,4]triazolo[1,5-c]pyrimidines, pharmaceutical compositions, and uses thereof
Inventor:
John E. Francis
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Feb 27, 1987
Inventor
John E. Francis
Assignee (at issue)
Ciba-Geigy
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.