Patents by Inventor David Sterner

David Sterner 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).

  • Direct opposite reverse refractor
    Patent number: 4572622
    Abstract: This invention consists of a geometrically patterned lens for primary uses in the field of image projection and refraction.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: February 25, 1986
    Inventor: David Sterner