Granted Patent
Utility
US 4,377,571 · App. 06/257,424
Methods for treating Dutch elm disease
Inventor:
Gary A. Strobel
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Apr 24, 1981
Inventor
Gary A. Strobel
Assignee (at issue)
The Research and Development Institute at Montana State University
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.