Patents by Inventor Chi-Wing Yang

Chi-Wing Yang 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).

  • Electric fan
    Patent number: D311772
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: October 30, 1990
    Assignee: N.E. National Battery Factory (H.K.) Ltd.
    Inventor: Chi-Wing Yang