Patents by Inventor Edward U. Chong

Edward U. Chong 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).

  • Three-way call detector unit
    Patent number: D346806
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: May 10, 1994
    Assignee: Communication Equipment & Engineering Company
    Inventor: Edward U. Chong
  • Three-way call detector rack
    Patent number: D348269
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: June 28, 1994
    Assignee: Communication Equipment & Engineering Company
    Inventor: Edward U. Chong