A year later, in the autumn of 1928, he established himself as self-employed in Budapest with a precision-tool workshop, whose activity was based on three of his own inventions, which he had patented.
(1928–1931) Ett år senare, hösten 1928, etablerade han sig som egen företagare i Budapest med en egen finmekanisk verkstad, vars verksamhet var baserad på de tre egna uppfinningar, som han fått patent på.