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{{PatentInfo |Assignee=Mabie, Todd & Company Limited |Country=FR |ApplicationNum=693093 |ApplicationDate=1930-03-31 |PatentNum=693093 |PatentDate=1930-11-14 |PriorityDate=1930-01-11 |Titolo=Perfectionnements aux porte-mines |Marca=Swan |Descrizione=Mat...