Patents Assigned to Tech-Tool Sourcing, Co., Ltd.
  • Drill bit case
    Patent number: D693123
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: November 12, 2013
    Assignee: Tech-Tool Sourcing, Co., Ltd.
    Inventor: An Qi
  • Drill bit case
    Patent number: D698549
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: February 4, 2014
    Assignee: Tech-Tool Sourcing Co., Ltd
    Inventor: An Qi
  • Drill bit case
    Patent number: D733430
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: July 7, 2015
    Assignee: Tech-Tool Sourcing Co., Ltd.
    Inventor: An Qi