Granted Patent
Utility
US 4,465,770 · App. 06/287,907
Stabilized enzymic solutions for determining urea
Inventor:
Ivan E. Modrovich
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Jul 29, 1981
Inventor
Ivan E. Modrovich
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.