Patents by Inventor Robert L. Welling, Jr.

Robert L. Welling, Jr. 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: 4997308
    Abstract: A paving stone of a square block including four lateral edges, four angled corners and a central hole. The four lateral edges of the square block each have a v-shaped notch formed therein mesial the angled corners. The paving stone also including a plurality of groove-like recesses extending between the corner of the v-shaped notches and the corners of said central square hole to form a paving stone having the appearance of four separate octagons.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: March 5, 1991
    Inventor: Robert L. Welling, Jr.