Patents by Inventor Ivor L Simpson

Ivor L Simpson 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).

  • Plastic fence
    Patent number: D427321
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: June 27, 2000
    Inventor: Ivor L Simpson