Where the owner name is not linked, that owner no longer owns the brand
Technical Examples
An electro-motion toothbrush includes a case containing a driving unit. First and second toothbrush support rods are flexible and rotated by the driving unit in directions opposite to each other. First and second toothbrush heads are connected to upper ends of the first and second toothbrush support rods, respectively. First and second toothbrush bristles are implanted along a lengthwise direction of the first and second toothbrush heads, interweave with each other, and not to cross each other during operation.