Patents by Inventor Liu Chia Pang

Liu Chia Pang 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).

  • Structure of punch for venetian blind manufacture
    Patent number: 5022255
    Abstract: This invention is related to an improved structure of punch for venetian blind manufacture and more particularly to the one which is including a revolving seat to control the operation of a punch tool guide block assembly, which guide block assembly is comprised of an upper guide block movably connected with a bottom guide block. Through the operation of the adjusting seat, the punching process is rapidly and efficiently alternated.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: June 11, 1991
    Inventor: Liu Chia Pang