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DK6179C
(en)
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Arrangement of water ballast tanks in submarines.
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DK5893C
(en)
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Water ballast tank for use in submarines.
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FR332367A
(en)
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Lifeboat
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FR348916A
(en)
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Dismountable boat
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FR342456A
(en)
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Submersible boat
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FR344428A
(en)
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Buoy
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FR336682A
(en)
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Unsinkable boat
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CH21433A
(en)
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Water tap
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FR335212A
(en)
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Unsinkable whaling boat
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DK5390C
(en)
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Device by submarine boats for automatic regulation of the water ballast according to the density of the water.
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FR338357A
(en)
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Marine boiler
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FR344174A
(en)
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Water clarification
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FR331640A
(en)
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Double unsinkable boat
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CH33170A
(en)
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Watercraft
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DK6841C
(en)
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Water tap.
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CH31339A
(en)
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Water purifier
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FR334213A
(en)
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Mooring dinghy float
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CH27644A
(en)
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Water cooler
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DK5903C
(en)
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Stained water.
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FR2670E
(en)
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Marine boiler
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CH29281A
(en)
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Water heater
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ES33773A1
(en)
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Improvements made to ship anchors.
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DK4381C
(en)
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Silent Water Heater.
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CH26577A
(en)
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Water gas generator
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CH30874A
(en)
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Water ship for gas cookers
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