Patents by Inventor Ting H. Mak

Ting H. Mak 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).

  • Desk telephone
    Patent number: D271299
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: November 8, 1983
    Inventor: Ting H. Mak
  • Desk telephone
    Patent number: D271300
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: November 8, 1983
    Inventor: Ting H. Mak
  • Desk telephone
    Patent number: D271488
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: November 22, 1983
    Inventor: Ting H. Mak