Patents by Inventor Helena Gerarda G. J. Engelen

Helena Gerarda G. J. Engelen 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).

  • Hot air brush
    Patent number: D439701
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: March 27, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Helena Gerarda G. J. Engelen