Granted Patent
Utility
US 5,139,769 · App. 07/670,670
Anticalculus oral composition
Inventors:
Abdul Gaffar, Thomas G. Polefka
Patented Case
View Patent ↗
Granted: Aug 18, 1992
Filed: Mar 18, 1991
Inventors
Abdul Gaffar
Thomas G. Polefka
Assignee (at issue)
Colgate-Palmolive Company
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.