Patents by Inventor Yong Ling Chang

Yong Ling Chang 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).

  • Paintball gun
    Patent number: D482081
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: November 11, 2003
    Assignee: Kingman International Corporation
    Inventor: Yong Ling Chang
  • Paintball gun
    Patent number: D482082
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: November 11, 2003
    Assignee: Raven USA, LLC
    Inventor: Yong Ling Chang
  • Paintball gun
    Patent number: D482743
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: November 25, 2003
    Assignee: Kingman International Corporation
    Inventor: Yong Ling Chang