Patents by Inventor Ralf Dümmel

Ralf Dümmel 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).

  • Fitness device
    Patent number: D522074
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: May 30, 2006
    Assignee: DS Produkte Dieter Schwarz GmbH
    Inventor: Ralf Dümmel