Patents by Inventor Stewart Martinsen

Stewart Martinsen 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).

  • Vest-saddle toy
    Patent number: 4848067
    Abstract: The present invention discloses a human saddle toy for use by an adult in giving piggyback rides to a child. The human saddle includes a three-point stabilization feature whereby the toy can be used with a substantial decrease in the risk of discomfort and harm to the adult and a reduction in fear and apprehension on the part of the child, with a reduced incidence of injury to the child. The device is adjustable to accommodate both adults and children of various sizes.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: July 18, 1989
    Assignee: Dynatec International, Inc.
    Inventor: Stewart Martinsen