Patents by Inventor Ling-Ling Hsieh-Yeh

Ling-Ling Hsieh-Yeh 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).

  • Sledge hammer handle
    Patent number: D538626
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: March 20, 2007
    Inventor: Ling-Ling Hsieh-Yeh
  • Sledge hammer handle
    Patent number: D564324
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: March 18, 2008
    Inventor: Ling-Ling Hsieh-Yeh