Granted Patent
Utility
US 4,618,365 · App. 06/560,031
Substituted tetrazolinones and their use as herbicides
Inventors:
Rupert A. Covey, Patricia J. Forbes, Allyn R. Bell
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Dec 9, 1983
Inventors
Rupert A. Covey
Patricia J. Forbes
Allyn R. Bell
Assignee (at issue)
Uniroyal Chemical Company, Inc.
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.