Granted Patent
Utility
US 4,778,821 · App. 07/073,821
Method for controlling helmintic parasites
Inventors:
Ellen R. Clough, Carl K. Edwards, III
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Jul 15, 1987
Inventors
Ellen R. Clough
Carl K. Edwards, III
Assignee (at issue)
International Minerals & Chemical Corp.
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.