Number | Date | Country | Kind |
---|---|---|---|
55-36711 | Mar 1980 | JPX | |
55-36712 | Mar 1980 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3523027 | Hall | Aug 1970 | |
3833744 | Bomstein | Sep 1974 | |
4260228 | Miyata | Apr 1981 | |
4264155 | Miyata | Apr 1981 | |
4280954 | Yannas et al. | Jul 1981 |
Number | Date | Country |
---|---|---|
1515963 | Jun 1978 | GBX |
Entry |
---|
Patent Abstracts of Japan, vol. 3, No. 54, (1979), p. 141 C45. |
Chemical Abstracts, vol. 76, No. 17, (1972), p. 344, 98205n. |