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E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
E04D5/12—Roof covering by making use of flexible material, e.g. supplied in roll form specially modified, e.g. perforated, with granulated surface, with attached pads
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FR1005663D1947-09-041947-09-04
Roof covering and its manufacturing process
ExpiredFR1005663A
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