A luminescent jigsaw picture or pattern mainly comprises a frame body with a plurality of conductive circuits aligned in sequence of a negative circuit comes after a positive or vice versa, wherein a wiring box and a multistage switch are disposed in the frame body for selecting and conductively jointing...http://www.google.com.au/patents/US6216373?utm_source=gb-gplus-sharePatent US6216373 - Luminescent jigsaw picture
