Number | Date | Country | Kind |
---|---|---|---|
3503241 | Jan 1985 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3692183 | Tra | Sep 1972 | |
4126513 | Justus et al. | Nov 1978 | |
4316768 | Goddard | Feb 1982 |
Number | Date | Country |
---|---|---|
2751949 | May 1978 | DEX |
1600477 | Sep 1970 | FRX |
1492209 | Nov 1977 | GBX |
Entry |
---|
Das Papier, Book 1, 1980, pp. 5-11. |
Das Papier, Book 10A, 1978, pp. V149-V150. |