| Number | Date | Country | Kind |
|---|---|---|---|
| GE92U000036 | Jun 1992 | ITX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 635592 | Rauhoff | Oct 1899 | |
| 4129391 | Gamacher | Dec 1978 | |
| 4993860 | Sommer | Feb 1991 |
| Number | Date | Country |
|---|---|---|
| 346113 | Dec 1989 | EPX |
| 63-222796 | Sep 1988 | JPX |
| 63-222797 | Sep 1988 | JPX |
| PCTE8900020 | Aug 1989 | WOX |
| 2157717 | Oct 1985 | GBX |
| Entry |
|---|
| PCT/US91/08823 Jun. 11, 1992. |
| PCT/US91/08824 Jun. 11, 1992. |