IMPROVEMENTS RELATING TO SMOKING-ARTICLE MOUTHPIECE-ELEMENTS
A smoking article mouthpiece element comprises a first portion within which a smoke-passage and a ventilation-duct extends from end-to-end of the portion, a downstream end of the duct being spaced from the periphery of the first portion and the wall and the walls of the duct being gas impervious and...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
22.06.1988
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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