Granted Patent
Utility
US 4,461,772 · App. 06/477,236
Additives for improving ruminant feed utilization
Inventors:
Paul E. Marecki, John M. Weaver
Patented Case
View Patent ↗
Granted: Jul 24, 1984
Filed: Mar 21, 1983
Inventors
Paul E. Marecki
John M. Weaver
Assignee (at issue)
SDS Biotech Kabushiki Kaisha
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.