Patents by Inventor Wan K. Yip

Wan K. Yip 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).

  • Lantern
    Patent number: D252834
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: September 4, 1979
    Assignee: Chung Ah Manufacturing Company, Limited
    Inventor: Wan K. Yip
  • Lantern
    Patent number: D257540
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: November 18, 1980
    Assignee: Chung Ah Manufacturing Co., Ltd.
    Inventor: Wan K. Yip