Patents by Inventor Simon C. Y. To

Simon C. Y. To 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).

  • Ring binder
    Patent number: D377805
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: February 4, 1997
    Assignee: World Wide Stationery Manufacturing Co. Ltd.
    Inventor: Simon C. Y. To