1. Owens Corning Fiberglass Corp. U.S.P. 3, 448, 500 (29 Dec., 1966).
2. E. I. du Pont de Nemours & Co. Inc. (DuP). B.P. 1, 282, 148 (U.S.A., 28 June, 1968).
3. DuP. B.P. 1, 448, 100 (U.S.A., 15 Dec., 1972).
4. DuP. U.S.P. 3, 973, 386 (14 April, 1974).
5. DuP. U.S.P. 3, 447, 302 (30 Jan., 1959).