LEGO is based off of earlier designs of interlocking bricks, they are well known because they got really good at affordability, high tolerances, and durability not because they invented the concept. Beyond that the original functional patents have long expired.
https://en.wikipedia.org/wiki/Hilary_Page#Kiddicraft
LEGO is based off of earlier designs of interlocking bricks, they are well known because they got really good at affordability, high tolerances, and durability not because they invented the concept. Beyond that the original functional patents have long expired.