− | Brevetto di un porta mine. {{AdditionTo|DK|09144}} {{SamePatent|FR|06524E}} {{SamePatent|DE|183242}} {{SamePatent|GB|190616715}} | + | Brevetto di un porta mine. {{AdditionTo|DK|09144}} {{SamePatent|FR|06524E}} {{SamePatent|DE|183242}} {{SamePatent|GB|190616715}} {{SamePatent|CH|37618}} |