Granted Patent
Utility
US 4,655,824 · App. 06/620,120
Certain trifluoromethoxy-phenoxy-pyridines having herbicidal activity
Inventors:
Rudolf Mengel, Ludwig Schroder, Werner Stransky, Gerbert Linden, Sigmund Lust
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Jun 13, 1984
Inventors
Rudolf Mengel
Ludwig Schroder
Werner Stransky
Gerbert Linden
Sigmund Lust
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.