Granted Patent
Utility
US 4,656,164 · App. 06/763,571
O-(substituted allylic) dithiophosphonate insecticides
Inventor:
Charles G. Chavdarian
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Aug 8, 1985
Inventor
Charles G. Chavdarian
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.