Number | Date | Country | Kind |
---|---|---|---|
58-7152 | Jan 1983 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4301235 | Ichijima et al. | Nov 1981 | |
4366237 | Ichijima et al. | Dec 1982 | |
4407936 | Ichijima et al. | Oct 1983 | |
4420556 | Booms et al. | Dec 1983 |
Entry |
---|
Research Disclosure, Item 17643, pp. 22-23, Dec., 1978. |