Tob. Reporter, 1986, 113-10, p. 60, ISSN.0361-5693 Structure and method of making cigarettes HOUCK W.G.; NEWSOME R.W.; NICHOLS W.A. US Patent 4,600,027. Philip Morris. Adjustable dilution cigarette....
Tob. Reporter, 1986, 113-11, p. 70, ISSN.0361-5693 Method for producing filter cigarettes NICHOLS W.A.; NEWSOME R.W. US Patent 4,601,298. Philip Morris. Variable dilution filter....