Number | Name | Date | Kind |
---|---|---|---|
4711888 | Walker et al. | Dec 1987 | |
4859679 | Santini | Aug 1989 | |
4940712 | Walker et al. | Jul 1990 |
Number | Date | Country |
---|---|---|
0164204 | Dec 1985 | EPX |
0233461 | Aug 1987 | EPX |
0319170 | Jun 1989 | EPX |
2045756 | Nov 1980 | GBX |
Entry |
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Copending U.S. Application Ser. No. PCT/US92/00443 of Jan. 17, 1992. |
Bioch. J. 1951, 48, pp. 400-406. |