Granted Patent
Utility
US 5,989,922 · App. 08/310,042
Method for determining rheumatoid factors and agents for carrying out the method
Inventor:
Tibor Toth
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Sep 22, 1994
Inventor
Tibor Toth
Assignee (at issue)
Behring Diagnostics GmbH
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.