Number | Date | Country | Kind |
---|---|---|---|
3830342 | Sep 1988 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4327847 | Tinnes | May 1982 | |
4427184 | Steinwider et al. | Jan 1984 | |
4756452 | Tsukamoto et al. | Jul 1988 |
Number | Date | Country |
---|---|---|
2918333 | Jul 1988 | DEX |
Entry |
---|
Iron and Steel Engineer, p. 31, 7-84. |