Number | Date | Country | Kind |
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4-300846 | Nov 1992 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3681578 | Stevens | Aug 1972 | |
4597052 | Matsuda | Jun 1986 | |
4783778 | Finch et al. | Nov 1988 | |
5241550 | Kusano | Aug 1993 | |
5271023 | Norman | Dec 1993 |
Number | Date | Country |
---|---|---|
1-298446 | Dec 1989 | JPX |
Entry |
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Microcomputer Technical Q & A, Hitach Microcomputer HMCS 400 Series Application Note, 2nd edition, No. ADJ-502-024A, p. 18, (Mar. 1990) QA 4HC-054A (No translation). |
Akita et al., "Fail Safe System for Railway Signalling Control", Denshi Jouhou Tsuushin Gakai Shi, vol. 73, No. 11, pp. 1203-1208, (Nov. 1990) (No translation). |