The invention provides a toothbrush having a handle portion defining a longitudinal axis, a head portion coupled to the handle portion having a plurality of bristles extending therefrom, a light source disposed within at least one of the handle portion and the head portion, and a base portion including...http://www.google.fr/patents/US20100050357?utm_source=gb-gplus-shareBrevet US20100050357 - ILLUMINATED TOOTHBRUSH
Numéro de demande: 12/202,937 Numéro de publication: US 2010/0050357 A1 Date de dépôt: 2 sept. 2008 Brevet délivré: US8079109 ( Date de délivrance 20 déc. 2011)
