Patents by Inventor Vivian Robertson

Vivian Robertson 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).

  • Patent number: 4116414
    Abstract: A book holder utilizes a flat rigid sheet having a bar fixedly secured thereto and extending along the marginal edge of the sheet and outstanding therefrom. Another sheet is hingeably secured to the bar carrying sheet at an opposed marginal edge. A flexible slat is secured to an opposite edge of the hingeable sheet and is also secured to the bar carrying sheet on a surface opposite to the location of the bar. A pair of clothespin-like pinching devices are attached to a pair of flexible cord-like members on the surface of the bar carrying sheet. In use, the book holder may be supported on a horizontal resting surface by having the bar carrying sheet left inclined relative to the supporting surface and utilizing the clamping devices to maintain the pages of a book open when the cover of the book rests on the bar carrying surface of the bar carrying sheet.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: September 26, 1978
    Inventor: Vivian Robertson