In May 1996 Karl S. Outman applied for a U. S. Patent for a geometric construction toy set. In November 1997 he filed for
another U. S. Patent for a similar geometric construction set.
Both of these patents were issued in 1998. Here is a link to his patents on Google:
The full patent document can be accessed at the USPTO. Below is an image from his second patent:
The full patent document can be accessed at the USPTO. |
