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British business Alvis had registered the fresh 14K and you can 18L, but neither entered design before war finished. However, Alvis pushed to come that have invention, starting the new 9-cylinder Alvis 501 Leonides and later the newest 14-cylinder Alvis 701 Leonides Big. Isotta Fraschini and you will Piaggio away from Italy one another got aside permits, the former creating the newest K.14, the second the new P.XI.