Patents by Inventor Ernst Haaksma

Ernst Haaksma 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).

  • Chair
    Patent number: D577229
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 23, 2008
    Assignee: Back Quality USA
    Inventor: Ernst Haaksma
  • Chair
    Patent number: D577230
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: September 23, 2008
    Assignee: Back Quality USA
    Inventor: Ernst Haaksma
  • Chair
    Patent number: D577933
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: October 7, 2008
    Assignee: Back Quality USA
    Inventor: Ernst Haaksma