Patents by Inventor Adrianus Siewertsen

Adrianus Siewertsen 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).

  • Perambulator
    Patent number: D568794
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: May 13, 2008
    Assignee: Maxi Miliaan B.V., A Dutch Corporation
    Inventor: Adrianus Siewertsen
  • Perambulator
    Patent number: D583719
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: December 30, 2008
    Assignee: Cosco Management, Inc.
    Inventor: Adrianus Siewertsen
  • Perambulator
    Patent number: D585337
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: January 27, 2009
    Assignee: Cosco Management, Inc.
    Inventor: Adrianus Siewertsen
  • Perambulator
    Patent number: D585338
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: January 27, 2009
    Assignee: Cosco Management, Inc.
    Inventor: Adrianus Siewertsen