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Publication of BE687666ApublicationCriticalpatent/BE687666A/xx
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
E04D11/005—Supports for elevated load-supporting roof coverings