Granted Patent
Utility
US 4,981,105 · App. 07/421,599
Method for increasing performance of ruminant animals
Inventor:
Mark K. Petersen
Patented Case
View Patent ↗
Granted: Jan 1, 1991
Filed: Oct 16, 1989
Inventor
Mark K. Petersen
Assignee (at issue)
The Research and Development Institute at Montana State University
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.