70546 ⎘
Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers; Locking means for ports, doors, windows, covers, or the like, e.g. providing for watertight closure when locked comprising movable positive fit locking members, e.g. swivelling locking clips, or dogs comprising multiple positive fit locking members arranged for simultaneous locking action with mechanical drive for effecting simultaneous locking action