Granted Patent
Utility
US 4,508,907 · App. 06/431,373
2,3-Dichloro-5-trichloromethylpyridine
Inventor:
David Cartwright
Patented Case
View Patent ↗
Granted: Apr 2, 1985
Filed: Sep 30, 1982
Inventor
David Cartwright
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.