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Priority claimed from GB730272Aexternal-prioritypatent/GB1423516A/en
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Publication of SE7302184LpublicationCriticalpatent/SE7302184L/sv
A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
A24D3/04—Tobacco smoke filters characterised by their shape or structure
A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution