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Cigarettes and methods of making them
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Patent number 4,903,712
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Issue date Feb 27, 1990
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Tobacco Research and Development Institute Limited
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Mauritz L. Strydom
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
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3840028
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Patent number 3,840,028
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Issue date Oct 8, 1974
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
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3118453
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Patent number 3,118,453
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Issue date Jan 21, 1964
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
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3096772
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Patent number 3,096,772
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Issue date Jul 9, 1963
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A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES