Granted Patent
Utility
US 4,804,780 · App. 06/835,847
Substituted nitro and cyanoguanidines
Inventors:
Laurine M. Speltz, Bryant Leonidas Walworth, Alexander D. Pavlista
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Mar 3, 1986
Inventors
Laurine M. Speltz
Bryant Leonidas Walworth
Alexander D. Pavlista
Assignee (at issue)
American Cyanamid Company
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.