Granted Patent
Utility
US 4,438,271 · App. 06/318,550
2-Ethylsulfonyl pyridine 1-oxide derivatives
Inventors:
Allyn R. Bell, Arthur M. P. Doweyko, John A. Minatelli
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Nov 5, 1981
Inventors
Allyn R. Bell
Arthur M. P. Doweyko
John A. Minatelli
Assignee (at issue)
Uniroyal Ltd.
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.