Patents by Inventor Cheng-Cheng Su

Cheng-Cheng Su 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).

  • Patent number: 4771976
    Abstract: A main plate having a bookstop on its lower end and having a cavity on its inside. The cavity slidably retains two slide plates which are extendable from its lateral sides and one top plate which is extendable from its top. The top plate itself also has two slide plates which are extendable from its lateral sides when the top plate and the slide plates are extended. A support rod is adjustable in a multiplicity of grooves on the base plate and also adjustable on the back of the main plate for allowing a wide range of reading angles and support stability.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: September 20, 1988
    Inventor: Cheng-Cheng Su