Patents by Inventor Taw Tai-Seng

Taw Tai-Seng 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).

  • Lock set proof against prize up
    Patent number: 4838061
    Abstract: A lock with hidden pins which is characterized by an outer sleeve, a pivot in the inner sleeve, a short tube, and an outer covering for the outer sleeve. The keyhole is positioned in the pivot, and the short tube and the pivot can be aligned. The head and the stem of the key can be disassembled.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: June 13, 1989
    Inventor: Taw Tai-Seng