| Number | Date | Country | Kind |
|---|---|---|---|
| 9-60645 | Jul 1997 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D283689 | Nakano et al. | May 1986 | |
| D299710 | Iwakura et al. | Feb 1989 | |
| D305748 | Kaneko et al. | Jan 1990 | |
| D333806 | Davidson | Mar 1993 | |
| D339089 | Gibbons et al. | Sep 1993 | |
| D344046 | Kitagawa et al. | Feb 1994 | |
| D375281 | Kitagawa et al. | Nov 1996 | |
| D388366 | Nishino | Jan 1997 |