Tob. Reporter, 1987, 114-8, p. 52, ISSN.0361-5693 Mouthpiece element for cigarettes HORSEWELL H.G.; DUKE M.G. US Patent 4,660,576. BAT....
Tob. Reporter, 1987, 114-8, p. 50, ISSN.0361-5693 Tobacco smoke filters HORSEWELL H.G.; DUKE M.G.; PHELPSTEAD J.W. US Patent 4,660,579. BAT....