Many constructors imitated the Addiator Arithma. Especially in Japan and Russia.

Otto Meuter (1892-1970) was constructor in the addiator-factory. After a lot of problems (money) he left Addiator and produced (with Jean Bergmann) the calculators Pro-Calculo and Correntator. In 1928 he founded Werkstatt Otto Meuter in Berlin and produced the first Produx machines. After World War 2 Otto’s son Claus goes to Bremen (West-Germany) and Luzie Meuter (the ex-wife of Otto) started producing calculators in East-Germany under the name Record LM.

Hans-Wolfgang Kübler (son of Carl, Addiator) produced by his own in 1949 in Bad Harzburg Addimult calculators. He said: Addiator jetzt auch von Addimult.