Granted Patent
Utility
US 4,453,972 · App. 06/460,471
Phenoxy pyridine derivatives and herbicidal compositions containing same
Inventors:
Ludwig Schroder, Werner Stransky, Rudolf Mengel, Gerbert Linden
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Jan 24, 1983
Inventors
Ludwig Schroder
Werner Stransky
Rudolf Mengel
Gerbert Linden
Assignee (at issue)
Celamerck GmbH & Co. KG
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.