| 摘要 |
A filter for a cigarette which includes a protrusion of smoke permeable material integral with and coaxially projecting from the mouth end of the filter rod. The mouth end of the filter rod surrounding the protrusion is smoke impermeable so that as the cigarette to which the filter is attached is smoked, the smoke will exit the filter rod in generally radially outward direction through the smoke permeable protrusion.
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