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E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
E04D3/26—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of concrete or ceramics
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FR580292D1924-04-181924-04-18
New decorated panels in reinforced cement or any agglomerates used as roofing and coverings
ExpiredFR580292A
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