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FI21845A
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Precipitation basin for water purification and similar purposes
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FR1004068A
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Water pipe
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FR948318A
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Floating bathtub
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FR953431A
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Advanced bathtub
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Improvements to water meters
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FR953228A
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Improvements to water sterilization processes
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AT172140B
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Sewage treatment plant
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FR967705A
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Waterway warning
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Improvement in the descaling of water heaters
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FR1005123A
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Cooling water purification plant
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ES177182A1
(en)
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IMPROVEMENTS INTRODUCED IN WATER FILTRATION FACILITIES
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Hot water generator
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FR947439A
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Hot water generator
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FR975429A
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Freezing basin
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AT168893B
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bathtub
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FR990884A
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Advanced water meter
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Pipe connection
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Water meter
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Arrangement for water drainage in windows
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Improvements to hot water conditioning devices
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Hot water bottle improvements
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FR950821A
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Tidal water height calculator
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FI24110A
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Water purification method
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FR943881A
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Washing basin
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ES179991A1
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PROCEDURE TO RAISE WATER
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