The name of the designer was Kurbal, notKurbala.
The Russian language typically adds an "a" at the end of nouns when they are placed in a complement of the verb.
Oh, sorry!! I have seen the final "a" added to so many names that I thought it was the same! Thank you so much for correcting my mistake.No, in this case you are not right. He was actually Leonid Panteleyevich Kurbala, not Kurbal.