Number | Date | Country | Kind |
---|---|---|---|
704/85 | Feb 1985 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
4229454 | Beriger | Oct 1980 | |
4283444 | de Sousa et al. | Aug 1981 |
Number | Date | Country |
---|---|---|
167491 | Jan 1986 | EPX |
1499850 | Feb 1978 | GBX |
Entry |
---|
de Sousa et al., JSDC vol. 99 (1983) p. 118-121. |