Patents by Inventor Leung Y. Choi

Leung Y. Choi 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).

  • Stud for use in securing a button
    Patent number: D344252
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: February 15, 1994
    Assignee: Ching Fung Metal Manufacturing Factory Ltd.
    Inventor: Leung Y. Choi