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Cigarette filter
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Patent number 4,643,206
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Issue date Feb 17, 1987
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Brown & Williamson Tobacco Corporation
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Martin L. Reynolds
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
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Cigarette filter
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Patent number 4,611,607
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Issue date Sep 16, 1986
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Brown & Williamson Tobacco Corporation
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Martin L. Reynolds
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
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Cigarette filter
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Patent number 4,580,584
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Issue date Apr 8, 1986
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Brown & Williamson Tobacco Corporation
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Martin L. Reynolds
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
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Cigarette filter
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Patent number 4,387,728
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Issue date Jun 14, 1983
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Brown & Williamson Tobacco Corporation
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Martin L. Reynolds
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES