Patents by Inventor Ernst Dart

Ernst Dart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070253173
    Abstract: Motion sensor apparatus includes opposing motion detector assemblies that include rolling ball electrical connectors oriented to operate when the device is inverted.
    Type: Application
    Filed: January 18, 2007
    Publication date: November 1, 2007
    Inventor: Ernst Dart