Number | Date | Country | Kind |
---|---|---|---|
62-271119 | Oct 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4284701 | Abbott et al. | Aug 1981 | |
4434220 | Abbott et al. | Feb 1984 | |
4737433 | Rimai et al. | Apr 1988 | |
4904558 | Nagatsuka et al. | Feb 1990 |
Entry |
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Patent Abstracts of Japan, vol. 7, No. 196 (P-219)(1341) Aug. 26, 1983 & JP-A-58 95748 (Hitachi) Jun. 7, 1983. |