Number | Date | Country | Kind |
---|---|---|---|
61-91191 | Apr 1986 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2550119 | Marborg et al. | Apr 1951 | |
3143687 | Hiertberg et al. | Aug 1964 | |
4093915 | Briefer | Jun 1978 | |
4278971 | Yasui et al. | Jul 1981 | |
4401942 | Renz | Aug 1983 | |
4419621 | Becker et al. | Dec 1983 |
Entry |
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Electric Lighting & Facilities in Railways, "Electric Power and Railroad", vol. 28, No. 6 (278), May 25, 1978, pp. 29-32. |