Patents by Inventor Zheng Zi Liu

Zheng Zi Liu 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).

  • Flashlight
    Patent number: D757972
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 31, 2016
    Assignee: Alltrade Tools LLC
    Inventors: Vincent W. Caito, Zheng Zi Liu
  • Flashlight
    Patent number: D765898
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 6, 2016
    Assignee: Alltrade Tools LLC
    Inventors: Vincent W. Caito, Zheng Zi Liu
  • Flashlight
    Patent number: D767183
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 20, 2016
    Assignee: Alltrade Tools LLC
    Inventors: Vincent W. Caito, Zheng Zi Liu