Patents by Inventor Dirk Roethling

Dirk Roethling 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).

  • Patent number: D310967
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: October 2, 1990
    Assignee: Firma Max Zapf
    Inventor: Dirk Roethling