Patents by Inventor Douglas John Colclough

Douglas John Colclough 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).

  • Brick
    Patent number: D464442
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: October 15, 2002
    Assignee: Boral Bricks (NSW) Pty. Ltd.
    Inventors: Glenn Clark, Douglas John Colclough