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The "Mesoscaphe", the submarine boat built by Swiss oceanographer and deep sea pioneer Jacques Piccard, is presented to the media on August 25, 1963 in Lausanne in the canton of Vaud, Switzerland. During the "Expo 64", the Swiss National Exhibition in 1964, visitors had the chance of diving into Lake Geneva inside the "Mesoscaphe". The exhibition lasted from April 30 until October 25, 1964 during which time it attracted around 12 million visitors. (KEYSTONE/PHOTOPRESS-ARCHIV/Str) Das von Jacques Piccard gebaute Unterseeboot "Mesoscaphe" wird am 25. August 1963 der Presse vorgefuehrt. Das Boot tauchte waehrend der Expo 64 in Lausanne im Kanton Waadt in den Genfersee und befoerderte Besucher. Die Schweizerische Landesausstellung dauerte vom 30. April bis zum 25. Oktober 1964 und lockte gegen zwoelf Millionen Besucher an. (KEYSTONE/PHOTOPRESS-ARCHIV/Str)