and it was delivered and this invention then conquered the world in one hundred seventeen the double m. trademarkwas copyrighted. and. the double entry for a logo has become a trademark for like c. . in the city center to treat fair buildings were constructed during the nineteenth century the best known and most famous is the made love. and the legislators went even further to develop the structure for the sample fares known as fair palaces starting around one thousand nine hundred over two dozen of them popped up around central park many of them in the form of passages. in the bottom floors of the displays to disdain on the upper floors the actual fair spaces were conceived as one way layouts like an ikea one if you would about yukio you know all the visitors are brought up to one floor and the fair organizers have to make sure they don't get away. with it there's a they have to go all the way around and once they're satisfied just like an ikea today they go on to the next floor. others often so this one way layout became the model for the sample fair palaces of leipzig inner city thought about