Granted Patent
Utility
US 4,464,391 · App. 06/172,943
Pesticides
Inventors:
Michael Elliott, Norman F. Janes, David A. Pulman
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Jul 28, 1980
Inventors
Michael Elliott
Norman F. Janes
David A. Pulman
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.