Patents by Inventor Peter A. Ball

Peter A. Ball 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).

  • Building block
    Patent number: 5131202
    Abstract: A building block, at least one face of which has a recessed surface along at least a portion of its periphery. The recessed surface is of non-uniform width and, at least in part, defines a surface of irregular shape. Each remaining face of the block has a surface of regular geometric shape facilitating laying of the block.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: July 21, 1992
    Assignee: ECC Construction Materials Limited
    Inventor: Peter A. Ball