. . "DITTA HEYDT & VOSS, CHEMISCHE FABRIK" . . . "data deposito: 29/12/1920" . . "1920-12-29" . "20792" . "MR018718" . . "DITTA HEYDT & VOSS, CHEMISCHE FABRIK" . . "FABBRICA" . . "DITTA HEYDT & VOSS, CHEMISCHE FABRIK"^^ . . "data deposito: 29/12/1920" . .