Granted Patent
Utility
US 4,225,579 · App. 06/015,635
Means and method for improving defenses against caries
Inventor:
Israel Kleinberg
Patented Case
View Patent ↗
Granted: Sep 30, 1980
Filed: Feb 27, 1979
Inventor
Israel Kleinberg
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.