Granted Patent
Utility
US 4,331,682 · App. 06/239,868
Cyclopropanecarboxylic acid-.alpha.-haloethynyl-m-phenoxybenzyl esters and their use for combating insect pests
Inventors:
Peter Ackermann, Jozef Drabek, Saleem Farooq, Laurenz Gsell, Odd Kristiansen, Rudolf Wehrli
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Mar 2, 1981
Inventors
Peter Ackermann
Jozef Drabek
Saleem Farooq
Laurenz Gsell
Odd Kristiansen
Rudolf Wehrli
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.