Patents by Inventor Chi-Hua Chien

Chi-Hua Chien 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).

  • Wall switch housing
    Patent number: 5623124
    Abstract: A wall switch housing include a wiring box, a predetermined number of resilient pieces, a predetermined number of connection nails, and a cover plate. The wiring box is provided therein with a plurality of locating projections for holding securely the resilient pieces. The cover plate is provided with a plurality of retaining holes corresponding in location to the resilient pieces and engageable with the connection nails for locating securely the cover plate.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: April 22, 1997
    Inventor: Chi-Hua Chien