Patents by Inventor Cruz Sintron

Cruz Sintron 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: 4030242
    Abstract: This disclosure pertains to a circular hoop having an outermost annular opening containing a pair of inwardly turned edges for snap-in engagement with a spherical shape that is fastened to one end of a hand held hoop propelling rod. An innermost notch, having a semi-circular cross-section having a mouth portion thereof directed towards the central axis of the hoop, is adapted to receive the spherical shape in frictional engagement therein.
    Type: Grant
    Filed: May 21, 1976
    Date of Patent: June 21, 1977
    Inventor: Cruz Sintron