Granted Patent
Utility
US 4,235,932 · App. 06/043,204
Pesticidal 1,4-bis-[(-propynyloxy)-methyl]-benzene and 1,4-bis-[(2-propynyloxy)-methyl] cyclohexane
Inventors:
Silvia Dorn, Albert Pfiffner, Rene Zurfluh
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: May 29, 1979
Inventors
Silvia Dorn
Albert Pfiffner
Rene Zurfluh
Assignee (at issue)
HOFFMANN-LA ROCHE 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.