Granted Patent
Utility
US 4,663,153 · App. 06/763,537
Sodium bicarbonate-containing tooth powder
Inventors:
Anthony E. Winston, Anthony Ansaldi, Norman Usen
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Aug 8, 1985
Inventors
Anthony E. Winston
Anthony Ansaldi
Norman Usen
Assignee (at issue)
Church & Dwight Co., Inc.
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.