Patents by Inventor Shih-Chiao Chen

Shih-Chiao Chen 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).

  • Multi-function tape recorder having automatic timing and signalling system for training purpose
    Patent number: 4172329
    Abstract: A tape recorder for instructional purposes comprises a timing and signalling circuit which responds to the giving of instruction by illuminating an LED on termination of the instruction for a period equal to the duration of the interval between commencement of the instruction and illumination of the LED.
    Type: Grant
    Filed: July 6, 1977
    Date of Patent: October 30, 1979
    Inventor: Shih-Chiao Chen