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Flexible panel
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Politecnico di Milano
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Pool liner retaining system
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Patent number 8,850,773
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Jo-Co Pools Inc.
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Joe Cohen
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3886751
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B28 - WORKING CEMENT, CLAY, OR STONE
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3667175
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E04 - BUILDING
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3555751
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Patent number 2,050,256
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E04 - BUILDING