Number | Date | Country | Kind |
---|---|---|---|
4-172926 | Jun 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4514459 | Nakagawa et al. | Apr 1993 |
Number | Date | Country |
---|---|---|
59-228042 | Dec 1984 | JPX |
60-24847 | Jun 1985 | JPX |
Entry |
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Seni Kikai Gakkaisi, vol. 41, No. 2, 1989, pp. T18-T26. |