Granted Patent
Utility
US 4,294,922 · App. 06/105,604
Method for monitoring pregnancy in milk-producing domestic animals
Inventor:
Robert Heap
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: Dec 20, 1979
Inventor
Robert Heap
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.