Patents by Inventor Attila L. Joo

Attila L. Joo 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: 6375186
    Abstract: The present invention concerns a device that can be used to easily and randomly draw a plurality of numbers one after the other from a large quantity of differently marked balls contained in a first chamber by a repeated manual activation of a horizontal movable bar that randomly captures one marked ball at a time from a first upper chamber into a cavity in the movable bar and transfers it to an elongated second lower chamber to display the captured and drawn marked balls. The second chamber includes two adjacent elongated channels and a channel selection member that includes a door rotatably mounted onto the device to leave only one of the channels opened and accessible for the captured balls at a time.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: April 23, 2002
    Inventor: Attila L. Joo