Tob. Reporter, 1985, 112-6, p. 68, ISSN.0361-5693 Application of liquid additives to filter tow PRYOR J.W. US Patent 4,509,452. R.J. Reynolds....
Tob. Reporter, 1986, 113-2, p. 64, ISSN.0361-5693 Method and apparatus for conveying filter tow PRYOR J.W. US Patent 4,537,583. R.J. Reynolds....