Granted Patent
Utility
US 6,735,802 · App. 09/567,829
Brushhead replacement indicator system for power toothbrushes
Inventors:
William G. Lundell, Clifford Jue, Annetta M. Papadopoulos
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: May 9, 2000
Inventors
William G. Lundell
Clifford Jue
Annetta M. Papadopoulos
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.