Granted Patent
Utility
US 3,970,652 · App. 05/259,241
Selectively herbicidal 2-substituted-4H-3,1-benzoxazin-4-ones
Inventor:
William C. Doyle, Jr.
Patented Case
View Patent ↗
Granted: Jul 20, 1976
Filed: Jun 2, 1972
Inventor
William C. Doyle, Jr.
Assignee (at issue)
Gulf Research & Development 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.