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专利名称：FILTER FOR A SMOKING ARTICLE发明人：FIEBELKORN, Richard申请号：EP09754141.1申请日：20090527公开号：EP2328431A1公开日：20110608
摘要：A multi-section filter (5) for a smoking article comprises at least a first (5B) anda second filter section (5A). The first filter section (5B) is at a mouth end of the filter (5)and the second filter section includes a set of ventilation holes (17) and a set of grooves(7). The grooves (7) extend from respective ventilation holes (17) along the second filtersection (5A) up to but not into the first filter section (5B).
申请人：British American Tobacco (Investments) Limited
地址：Globe House 1 Water Street London WC2R 3LA GB
国籍：GB
代理机构：Gill, Siân Victoria
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