Number | Name | Date | Kind |
---|---|---|---|
4827500 | Binkerd et al. | May 1989 | A |
5950167 | Yaker | Sep 1999 | A |
Number | Date | Country |
---|---|---|
0 892 534 | Jan 1999 | EP |
0 893 901 | Jan 1999 | EP |
2 335 826 | Sep 1999 | GB |
Entry |
---|
International Search Report, PCT/US00/22938, Jan. 24, 2001. |