Marta
Newbie
Hi, I am doing some research in relation to the beginning of the free bass and the converter. We know there were various instruments beforehand. The question is : was it indeed Sterligov who invented the converter (1929) ? If yes, where is his patent? Also , what is Frank Nardone's patent (1927) about, if someone could please explain in simple words? US17882627A . Many thanks. Marta