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Method and apparatus for producing electricity from thermal sea power
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Method and apparatus for producing electricity from thermal sea power
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Swimmer's safety buoy and float
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Breathing apparatus for swimmers
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Swimming device
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Apparatus for exchanging coastal tidal waters with fresh sea water
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Device for catching fish and other submarine life
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Mask
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Swimming face mask with periscope
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Swimming mask with snorkel means
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Game apparatus
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Swimming device
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Game apparatus
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