Granted Patent
Utility
US 4,783,213 · App. 07/086,268
Certain 2-(2-substituted benzoyl)-4-(substituted oxy or substituted thio)-1,3-cyclohexanediones
Inventor:
David L. Lee
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Aug 20, 1987
Inventor
David L. Lee
Assignee (at issue)
Stauffer Chemical 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.