Patents by Inventor Jian-Cheng He

Jian-Cheng He 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).

  • Key wrench
    Patent number: D680396
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: April 23, 2013
    Assignee: Hsiang Jih Hardware Ent. Co., Ltd.
    Inventor: Jian-Cheng He