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HRP20060174A2
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Permanent waste disposal and treatment system
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HRP20060164A2
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System for storage and transport of garbage
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HRP20050404A2
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Overhead tramcar system
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HRP20050349A2
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Highly productive and ecological freshwater pisciculture
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HRP20050348A2
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Seaside resorts heated with solar energy all the year
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HRP20050238A2
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Multipurpose oven for baking-roasting and cooking any kind of foodstuffs
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HRP20050196A2
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Ecological greenhouse with convertible roofing and direct solar irradiation
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HRP20050106A2
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New approach for installing and monitoring oil pipeline for possible pipeline leakage
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HRP20041050A2
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Environmentally friendly waterproof cesspool
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HRP20040652A2
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Generator of electrical energy actuated by wind energy and solar radiant energy
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HRP20040562A2
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Solar environmentally friendly drying device
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HRP20020511A2
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Ecological polyethylene greenhouse with shelves turnable towards the sun
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