Number | Date | Country | Kind |
---|---|---|---|
6-139469 | May 1994 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4472479 | Hayes et al. | Sep 1984 |
Number | Date | Country |
---|---|---|
2198254 | Jun 1988 | GBX |
Entry |
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Patent Abstracts of Japan, vol. 13, No. 118 (M-806), Mar. 1989. |
Patent Abstracts of Japan, vol. 7, No. 177 (M-233), Aug. 1983. |