US Patent Application 20110187551 - ILLUMINATED DOOR BELL
InventorUS Classes340/815.45, Using light emitting diodes340/815.4VISUAL INDICATIONInternational ClassG08B 5/00Abstract textThe present invention relates to a doorbell comprising: a pushbutton illuminated by a first light source; and a front cover illuminated by a second light source. The first light source and second light source may be positioned within a main body of a doorbell in a manner that ensures that the first light source and the second light source do not mix. |
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