Magic Bottle
Magic Bottles are those wondrous accessories that look like they are filled with milk or formula when standing upright, and then appear to be consumed by the doll when the bottle is turned over and placed in the doll's mouth. The designers of the bottle also patented a Magic Spoon and a Magic Chamber Pot.
Patents: US3245174 (bottle), US3254409 (spoon), US3534496 (chamber pot)
Patents: US3245174 (bottle), US3254409 (spoon), US3534496 (chamber pot)