Patents by Inventor Sergio Alcantara Maia

Sergio Alcantara Maia 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).

  • Method and device for holding an eyeglass with superimposed lenses to a wrist watch
    Patent number: 5065373
    Abstract: A holding device having a frame accommodating a watch body and a drawer attached to the frame underneath the watch body. The drawer accommodates an eyeglass with superimposed lenses. The eyeglass has a flexible bridge between the lenses to enable the lenses to be superimposed one over the other. A face of the watch body and the lenses can have the same shape.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: November 12, 1991
    Inventor: Sergio Alcantara Maia