Patents by Inventor Sergio O. Manancero

Sergio O. Manancero 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).

  • Mathematical and spatial toy apparatus
    Patent number: 5297965
    Abstract: A mathematical and spatial toy apparatus is arranged to include a grooved rack board arranged to receive individual block components to teach children the mathematical cumulative effect of such boards to provide rudimentary teaching in mathematical and spatial relationships.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: March 29, 1994
    Inventor: Sergio O. Manancero