. "data deposito: 12/06/1958" . . . . "MOLE ABRASIVE E A SMERIGLIO" . . . . "143297" . "data deposito: 12/06/1958" . "MR137831" . "BAY STATE ABRASIVE PRODUCTS COMPANY"^^ . "BREVETTO PER MARCHIO DI PRIMO DEPOSITO" . . . "BAY STATE ABRASIVE PRODUCTS COMPANY" . . . . "BAY STATE ABRASIVE PRODUCTS COMPANY" . "1958-06-12" .