| Number | Date | Country | Kind |
|---|---|---|---|
| 10-31199 | Oct 1998 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D290694 | Shimizu et al. | Jul 1987 | |
| D298747 | Shibayama et al. | Nov 1988 | |
| D333461 | Shimizu et al. | Feb 1993 | |
| D351827 | Shimizu et al. | Oct 1994 | |
| D368252 | Nakai | Mar 1996 | |
| D400180 | Shimizu | Oct 1998 | |
| D409155 | Goletto | May 1999 |