Number | Date | Country | Kind |
---|---|---|---|
63-306433 | Dec 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4059552 | Zweigle et al. | Nov 1977 | |
4294921 | Yamaguchi et al. | Oct 1981 | |
4746467 | Sakamoto et al. | May 1988 | |
4842978 | Ishikawa | Jun 1989 | |
4977059 | Liang et al. | Dec 1990 |
Number | Date | Country |
---|---|---|
2590185 | May 1987 | FRX |
55-121883 | Dec 1980 | JPX |
Entry |
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Patent Abstracts of Japan, vol. 4, No. 182 (C-35) [664], Dec. 16, 1980. |