Granted Patent
Utility
US 4,461,638 · App. 06/484,024
Delivery of plant nutrients
Inventor:
Vithal J. Rajadhyaksha
Patented Case
View Patent ↗
Granted: Jul 24, 1984
Filed: Apr 11, 1983
Inventor
Vithal J. Rajadhyaksha
Assignee (at issue)
Nelson Research & Development Company
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.