Granted Patent
Utility
US 5,309,590 · App. 07/999,466
Dentifrice/medication dispensing toothbrush
Inventor:
David Giuliani
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Dec 29, 1992
Inventor
David Giuliani
Assignee (at issue)
Gemtech
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.