| Number | Name | Date | Kind |
|---|---|---|---|
| D318229 | Umetsu | Jul 1991 | |
| D333098 | Hestehave et al. | Feb 1993 | |
| D344457 | Prevot et al. | Feb 1994 | |
| D359449 | Ota et al. | Jun 1995 | |
| D366416 | Semersky | Jan 1996 | |
| D366831 | Smersky et al. | Feb 1996 | |
| D390114 | Young | Feb 1998 | |
| D397614 | Krishnakumar et al. | Sep 1998 | |
| D402895 | Takahashi et al. | Dec 1998 | |
| D404308 | Takahashi et al. | Jan 1999 | |
| D405690 | Takahashi et al. | Feb 1999 | |
| D405691 | Takahashi et al. | Feb 1999 | |
| D407650 | Takahashi et al. | Apr 1999 | |
| D411453 | Piccioli et al. | Jun 1999 | |
| D413519 | Eberle et al. | Sep 1999 | |
| D414109 | Ota et al. | Sep 1999 | |
| D414116 | Bourque et al. | Sep 1999 | |
| 3140329 | Nutting | Jul 1964 | |
| 4257525 | Thompson | Mar 1981 | |
| 4273246 | Thompson | Jun 1981 | |
| 4281770 | Rainville | Aug 1981 | |
| 4363415 | Rainville | Dec 1982 | |
| 4629598 | Thompson | Dec 1986 | |
| 4727997 | Nakamura et al. | Mar 1988 | |
| 4909978 | Hasegawa et al. | Mar 1990 | |
| 4915241 | Morimura et al. | Apr 1990 | |
| 4952133 | Hasegawa et al. | Aug 1990 | |
| 4964522 | Umetsu et al. | Oct 1990 | |
| 5092476 | Yasuda et al. | Mar 1992 | |
| 5167970 | Yoshino et al. | Dec 1992 | |
| 5297686 | Takeuchi | Mar 1994 | |
| 5338503 | Yanagisawa et al. | Aug 1994 | |
| 5407086 | Ota et al. | Apr 1995 | |
| 5469612 | Collette et al. | Nov 1995 | |
| 5535901 | Ishii et al. | Jul 1996 | |
| 5560506 | Yanagisawa et al. | Oct 1996 | |
| 5637167 | Krishnakumar et al. | Jun 1997 | |
| 5704506 | Tobias et al. | Jan 1998 | |
| 5758790 | Ewing, Jr. | Jun 1998 | |
| 5918754 | Lyons et al. | Jul 1999 | |
| 5988418 | Maeshima | Nov 1999 |
| Number | Date | Country |
|---|---|---|
| 0 650 900 A1 | May 1995 | EPX |
| 889343 | Feb 1962 | GBX |