Granted Patent
Utility
US 4,313,752 · App. 06/181,731
2,2-Dimethylvaleric acid for growth enhancement of sugarcane
Inventor:
Sidney R. Siemer
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Aug 26, 1980
Inventor
Sidney R. Siemer
Assignee (at issue)
W. R. Grace & Co.
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.