. "1958-06-12" . . . . . . . "data deposito: 12/06/1958" . "MR137830" . "143296" . "MOLE ABRASIVE E PIETRE ECC." . "BREVETTO PER MARCHIO DI PRIMO DEPOSITO" . . . "BAY STATE ABRASIVE PRODUCTS COMPANY" . . "data deposito: 12/06/1958" . "BAY STATE ABRASIVE PRODUCTS COMPANY"^^ . . "BAY STATE ABRASIVE PRODUCTS COMPANY" . .