Number | Date | Country | Kind |
---|---|---|---|
1-24964 | Feb 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4715056 | Vlasbloem et al. | Dec 1987 | |
4803714 | Vlasbloem | Feb 1989 |
Number | Date | Country |
---|---|---|
147854 | Jul 1985 | EPX |
223432 | May 1987 | EPX |
2114309 | Aug 1983 | GBX |
Entry |
---|
Patent Abstracts of Japan; vol. 12, No. 163 (P-703)[3010]; 5/18/86, JPA-62-276539, 12/1/87. |