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The Lego group's Duplo product, introduced in 1969, is a range of simple blocks which measure twice the width, height and depth of standard Lego blocks, and are aimed at younger children.
'Fabuland' ran from 1979 to 1989. The more advanced 'Lego Technic' was launched in 1984. 'Lego Primo' is a line of blocks by the Lego Group for very young children that ran between 2004 until it was discontinued in 2006. In 1995 'Lego Baby' was launched for babies.
One of the largest Lego sets ever commercially produced is a minifig-scaled edition of the Star Wars Millennium Falcon. Designed by Jens Kronvold Fredericksen, it was released in 2007 and has 5,195 pieces. It was surpassed, though, by a 5,922 piece Taj Mahal.