A hollow block with six connectable faces which can connect with other ones and stretch from six different directions. It can be made for toys. It's China patent approved on 2002-11. The expired date for protection is on 2019-05-27. I am searching for an investor to make it or take over whole patent. I do not produce it by myself.
A hollow block with six connectable faces which can connect with other ones and stretch from six dif