Smerch: an heir to Katyusha 22:38 | 06/ 09/ 2006 MOSCOW. (RIA Novosti military commentator Viktor Litovkin) - Multiple-launch rocket systems (MLRSs) stand out among the weapons and military equipment produced by the Russian defense industry. The 300mm Smerch, which is sometimes called an heir to the Katyusha, is the most powerful of them all, and this is not some journalistic exaggeration. Russia has pioneered these launchers. The first patent, numbered 3603 and dated April 9, 1939, for "The Mechanized Unit for Firing Rocket Projectiles of Different Calibers" was granted to Soviet inventors Andrei Kostikov, Ivan Gvai and Vasily Aborenkov....