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E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
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Engineering & Computer Science
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Structural Engineering
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CH262200D1946-08-071947-03-15Materiale impermeabilizzante per copertura di terrazze, tetti piani, ecc.
CH262200A
(it)