Number | Date | Country | Kind |
---|---|---|---|
62-133817 | May 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4702560 | Endo et al. | Oct 1987 |
Number | Date | Country |
---|---|---|
0020027 | Apr 1980 | EPX |
0216168 | Aug 1986 | EPX |
645473 | Dec 1978 | CHX |
Entry |
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Patent Abstracts of Japan, vol. 9, No. 181 (E331) Jul. 26, 1985. |