Patents by Inventor Ute M. Grutzner

Ute M. Grutzner 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).

  • Steerable skateboard
    Patent number: 5029887
    Abstract: A skateboard which can be propelled with both hands through manpowered propelling devices, and which has been designed in such a manner that a rider can both propel and steer from a body position favorable for high performance, is disclosed.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: July 9, 1991
    Inventors: Ute M. Grutzner, Peter Mickenbecker