Granted Patent
Utility
US 4,258,194 · App. 06/074,216
Process for producing 2,3,5-trichloropyridine
Inventors:
Claus D. Weis, Peter Werner Sutter
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Sep 10, 1979
Inventors
Claus D. Weis
Peter Werner Sutter
Assignee (at issue)
Ciba-Geigy
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.