Number | Date | Country | Kind |
---|---|---|---|
2-337160 | Nov 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4101690 | Miyamoto et al. | Jul 1978 | |
4170483 | Shackle et al. | Oct 1979 | |
4232083 | Buerkley et al. | Nov 1980 |
Number | Date | Country |
---|---|---|
54-44706 | Nov 1976 | JPX |
Entry |
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Derwent publication of JP Kokai 63-242677 published in the United Kingdom in Oct., 1988. |