Patents by Inventor Tavi Semrad-Drutz

Tavi Semrad-Drutz 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).

  • Tri-circle hair clip
    Patent number: D412221
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: July 20, 1999
    Inventor: Tavi Semrad-Drutz
  • Penta-block hair clip
    Patent number: D415856
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: October 26, 1999
    Inventor: Tavi Semrad-Drutz
  • Tri-block hair clip
    Patent number: D417310
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: November 30, 1999
    Inventor: Tavi Semrad-Drutz