Number | Date | Country | Kind |
---|---|---|---|
4-294662 | Nov 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4489351 | d'Alayer de Costemore d'Arc | Dec 1984 | |
4796100 | Sakaguchi | Jan 1989 | |
4816925 | Hayashi | Mar 1989 | |
4974178 | Izeki et al. | Nov 1990 | |
5172242 | Yamaguchi et al. | Dec 1992 | |
5218672 | Morgan et al. | Jun 1993 | |
5243588 | Maeda et al. | Sep 1993 | |
5274463 | Matsumoto et al. | Dec 1993 |