Number | Date | Country | Kind |
---|---|---|---|
2-202098 | Jul 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4984244 | Yamamoto et al. | Jan 1991 | |
4994142 | Appelbaum | Feb 1991 | |
5019519 | Tanaka et al. | May 1991 | |
5075239 | Tegude | Dec 1991 | |
5093278 | Kamei | Mar 1992 |
Entry |
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"Technical Research Report" OQE85-8, pp. 55-58 (1985). |