Patents by Inventor Carlos A. Da Silva Marques

Carlos A. Da Silva Marques 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).

  • Musical instrument
    Patent number: 5587543
    Abstract: A musical instrument comprises a body, at least one element movable relative to the body and producing sound, and an inflatable cushion arranged so as to be in contact with the element during playing the instrument.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: December 24, 1996
    Inventor: Carlos A. Da Silva Marques