Number | Date | Country | Kind |
---|---|---|---|
8816632 | Jul 1988 | GBX |
Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/GB89/00797 | 7/13/1989 | 1/14/1991 | 1/14/1991 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO90/00817 | 1/25/1990 |
Number | Name | Date | Kind |
---|---|---|---|
3271591 | Ovshinsky | Sep 1966 | |
4226898 | Ovshinsky et al. | Oct 1980 | |
4665428 | Hockley et al. | May 1987 |
Number | Date | Country |
---|---|---|
115124 | Aug 1984 | EPX |
0117045 | Aug 1984 | EPX |
162529 | Nov 1985 | EPX |
0196462 | Oct 1986 | EPX |
Entry |
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J App Phys Support 2 pt 1 (1974), pp. 813-815 (Mei et al). |
Rep Prog Phys, 33, (1970) pp. 1129-1191 (Stoneham et al). |