A filter for a smoking article including a first flow path through the filter and a second flow path through the filter. The first and second flow paths extend coaxially along the filter. The second flow path is disposed around the first flow path, and a selector includes a part that is rotatable in relation to the first and second flow paths to allow flow selectively through the first and second flow paths.
申请公布号
CA2873539(C)
申请公布日期
2016.07.05
申请号
CA20122873539
申请日期
2012.05.11
申请人
BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
发明人
BAILEY, MARK;KALJURA, KARL;FARENDEN, PAUL;RUSSELL, DAVID;SCHOENMAKERS, WILBERT;SEYMOUR, DARREN;SPENDLOVE, DAVID