Number | Date | Country | Kind |
---|---|---|---|
2-138388 | May 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2862480 | Oberg | Dec 1958 | |
4610697 | Darling et al. | Sep 1986 | |
4950308 | Lang et al. | Aug 1990 |
Number | Date | Country |
---|---|---|
094097 | Nov 1983 | EPX |
1228092 | Oct 1986 | JPX |
1238886 | Oct 1986 | JPX |
1250094 | Nov 1986 | JPX |
2081489 | Apr 1987 | JPX |
3086795 | Apr 1988 | JPX |
3086796 | Apr 1988 | JPX |
Entry |
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Patent Abstracts of Japan, vol. 12, No. 316 (C-524)(3163) Aug. 26, 1988. |