Granted Patent
Utility
US 5,668,719 · App. 08/413,859
Method of fertilizer application and field treatment
Inventors:
Vladimer A. Bobrov, Nickolay A. Kan, Tamara G. Yanchevskaya, Donald E. McGrath, Andrey V. Skotnikov
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Mar 28, 1995
Inventors
Vladimer A. Bobrov
Nickolay A. Kan
Tamara G. Yanchevskaya
Donald E. McGrath
Andrey V. Skotnikov
Assignee (at issue)
Tyler Limited Partnership
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.