"data deposito: 28/10/1929" . . "MR036028" . . . . . "ARCTURUS RADIO TUBE CO." . "ARCTURUS RADIO TUBE CO." . "TUBI RIVELATORI, RETTIFICATORI ECC." . . "ARCTURUS RADIO TUBE CO."^^ . . . "1929-10-28" . "FABBRICA" . "data deposito: 28/10/1929" . . . "40756" . .