Patents by Inventor Roger Las

Roger Las 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).

  • Device for marking an element of information
    Patent number: 4234187
    Abstract: The device includes an helical thread cylinder, a sequence of elements of information being placed between said helical threads.A ring cooperating with the helical threads in the same way as a nut is fitted with a window, through which a selected element of information appears. Such a device can be used in games of snakes and ladders type.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: November 18, 1980
    Inventor: Roger Las