Granted Patent
Utility
US 5,160,528 · App. 07/505,030
Delivery system for agricultural chemicals
Inventors:
Ratan K. Chaudhuri, Kolazi S. Narayanan, Manilal S. Dahanayake
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: Apr 5, 1990
Inventors
Ratan K. Chaudhuri
Kolazi S. Narayanan
Manilal S. Dahanayake
Assignee (at issue)
ISP INVESTMENTS LLC
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.