Y Nelken, N Hajaj, Y Magdalen, D Cohen - US Patent 7,752,159, 2010 - Google Patents
US PATENT DOCUMENTS 5,634,121 A 5/1997 Tracz et al. 5,636,124 A 6/1997 Rischar et
al. 4,110,823. A 8, 1978 Cronshaw et al. 5,649,215 AT/1997 Itoh 4,286.322 A 8, 1981 …