Granted Patent
Utility
US 4,375,981 · App. 06/208,966
Method for controlling weed growth using herbicidally 5-(2-chloro-4-trifluoromethyl)-, or (4-trifluoromethyl or 2,6-dichloro-4-trifluoromethylphenoxy)-2-nitro-substituted carbonyl oxime-O-alkyl ethers
Inventor:
Dennis K. Krass
Patented Case
View Patent ↗
Granted: Mar 8, 1983
Filed: Nov 21, 1980
Inventor
Dennis K. Krass
Assignee (at issue)
PPG Industries, Inc.
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.