Patents by Inventor Helen Sue Martin

Helen Sue Martin 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).

  • Folding cardboard playhouse
    Publication number: 20040166765
    Abstract: A folding playhouse for recreational use by small children. The playhouse is of a single piece of rigid cardboard held together at its ends by strips of adhesive back hook and loop fasteners to form four walls. The playhouse has an integral roof formed by the same means. The playhouse folds flat for storage by means of an accordion style fold.
    Type: Application
    Filed: February 24, 2003
    Publication date: August 26, 2004
    Inventors: Helen Sue Martin, Eddie Glen Martin