− | Brevetto di un porta mine. {{AdditionTo|FR|363394}} {{SamePatent|DE|183242}} {{SamePatent|DK|09918}} {{SamePatent|GB|190616715}} | + | Brevetto di un porta mine. {{AdditionTo|FR|363394}} {{SamePatent|DE|183242}} {{SamePatent|DK|09918}} {{SamePatent|GB|190616715}} {{SamePatent|CH|37618}} |