Patents by Inventor Thomas E. Kaczperski

Thomas E. Kaczperski 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).

  • Hexagonal-shaped toy building block
    Patent number: 5057049
    Abstract: A toy building block which interconnects with other like blocks or other commercially available toy building blocks. The blocks herein described provide for equidistant spacing among adjacent post members which upon interconnection allow blocks to form branched connections at almost any desired angle.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: October 15, 1991
    Inventor: Thomas E. Kaczperski