Patents by Inventor Robert P. Marcelonis

Robert P. Marcelonis 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: 4294557
    Abstract: A portable shield intended to block the student typist's view of the keyboard and cylinder is made of cardboard having creases for folding at convenient locations. One portion of the shield screens the keyboard while another portion screens the cylinder. A relatively long extension member is attached to one side of the keyboard portion, extends downwardly along one side of the typewriter and is folded to pass under the feet of the typewriter in order to hold the device in place. The keyboard shield portion is also flexibly attached to the top of the typewriter so that the operator can raise the keyboard portion simply by raising his wrists against the bottom of it. This will enable him to check the position of his hands on the keyboard.
    Type: Grant
    Filed: December 27, 1979
    Date of Patent: October 13, 1981
    Inventors: Carroll H. Blanchard, Robert P. Marcelonis