Patents by Inventor Alfons Adriaan Den Ouden

Alfons Adriaan Den Ouden 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).

  • Construction units, some with corresponding pinion wheels mounted in meshed relation
    Patent number: 3965610
    Abstract: A toy comprising a base and means on the base rotatably mounting a plurality of pinion wheels in interengaging relationship one with another so that different patterns of the pinion wheels may be created.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: June 29, 1976
    Assignee: Brabo Corporation Naamloze Vennootschap
    Inventor: Alfons Adriaan Den Ouden