| Number | Date | Country | Kind |
|---|---|---|---|
| 8-014304 | Jan 1996 | JPX | |
| 8-015314 | Jan 1996 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4245903 | Hazama et al. | Jan 1981 | |
| 4819016 | Leonard et al. | Apr 1989 | |
| 5264884 | Michaud | Nov 1993 | |
| 5485234 | Stephenson, III et al. | Jan 1996 | |
| 5794084 | Ikari | Aug 1998 |
| Number | Date | Country |
|---|---|---|
| 5687029 | Jul 1981 | JPX |
| 214032 | Apr 1990 | JPX |
| Entry |
|---|
| Patent Abstracts of Japan No. JP 63 103217 A, published May 7, 1988. |
| Patent Abstracts of Japan No. JP 56 087029 A, published Jul. 15, 1981. |
| Patent Abstracts of Japn No. JP 61 284739 A, published Dec. 15, 1986. |