Granted Patent
Utility
US 4,155,745 · App. 05/893,215
Certain 2-(chloroacetylamino)methyl-1,3-dioxolanes, thioxalanes or dithiolanes as herbicides
Inventor:
Francis H. Walker
Patented Case
View Patent ↗
Granted: May 22, 1979
Filed: Apr 4, 1978
Inventor
Francis H. Walker
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.