Patents by Inventor Marlene J. Rizzo

Marlene J. Rizzo 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).

  • Softball/baseball training machine
    Patent number: 6305366
    Abstract: A softball and hardball training machine comprising a single drive unit with an adjustable speed control rotating two pneumatic tires at different RPM's to propel a ball at different speeds for simulating “off-speed” or “change-up” pitches to a student.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: October 23, 2001
    Inventors: Michael J. Rizzo, Marlene J. Rizzo