Tob. Reporter, 1989, 116-5, p. 58, abstr, ISSN.0361-5693 Filter cigarette with segmented sections NORMAN A.B.; PERFETTI T.A.; SAINTSING B.L. US Patent 4,759,380. R.J. Reynolds....
Tob. Reporter, 1989, 116-10, p. 64, ISSN.0361-5693 Incorporating a salt as cigarette additive LAWSON J.W.; BULLINGS B.R.; PERFETTI T.A. US Patent 4,830,028. R.J. Reynolds. Nicotine levulinate....