Patents by Inventor Yang T. Ching

Yang T. Ching 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).

  • Dry shaver
    Patent number: D363143
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: October 10, 1995
    Assignee: U.S. Philips Corporation
    Inventor: Yang T. Ching
  • Dry shaver
    Patent number: D365174
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: December 12, 1995
    Assignee: U.S. Philips Corporation
    Inventor: Yang T. Ching