Number | Date | Country | Kind |
---|---|---|---|
8609135 | Apr 1986 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3790390 | Shiba et al. | Feb 1974 | |
3901713 | Yamasue et al. | Aug 1975 | |
4288535 | Kanisawa et al. | Sep 1981 | |
4477561 | Menjo et al. | Oct 1984 | |
4619892 | Simpson et al. | Oct 1986 | |
4621041 | Saikawa et al. | Nov 1986 |
Entry |
---|
Beck et al.: J. Signalaufzeichnungsmaterialen, 1976, 4, pp. 131-137. |