Patents by Inventor Jacob Wilhemus Erken

Jacob Wilhemus Erken 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).

  • Multi-purpose cleaning tool
    Patent number: D545517
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: June 26, 2007
    Inventor: Jacob Wilhemus Erken
  • Multi-purpose cleaning tool
    Patent number: D572871
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: July 8, 2008
    Inventor: Jacob Wilhemus Erken