Patents by Inventor Chuang-Jiunn Chiou

Chuang-Jiunn Chiou 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).

  • Letter box
    Patent number: 4869425
    Abstract: A letter box includes a housing having a pivotable door having a letter inlet and an inlet cover pivotably covering the inlet, and an indicating device coupled to the inlet cover in the manner that when a letter is inserted from the inlet into the box the device will be actuated to indicated that there is a letter in the box.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: September 26, 1989
    Inventor: Chuang-Jiunn Chiou