Patents by Inventor Oscar Walker

Oscar Walker 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).

  • Three dimensional matte-frame system
    Patent number: 5513455
    Abstract: Three dimensional Matte-Frame System comprises a blank of flexible, bendable material generally having a rectangular picture carrying body; light weight; can be stacked and packed for carrying or shipping; will not require glue, nails or any other materials for assembly.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: May 7, 1996
    Inventor: Oscar Walker