Number | Date | Country | Kind |
---|---|---|---|
2-321401 | Nov 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4954844 | Morita et al. | Sep 1990 | |
5074342 | Kraehn | Dec 1991 |
Number | Date | Country |
---|---|---|
018141 | Oct 1980 | EPX |
371758 | Jun 1990 | EPX |
2-226266 | Nov 1990 | JPX |
2165776 | Apr 1986 | GBX |
Entry |
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Patent Abstracts of Japan vol. 14, No. 534 (P-1135) Nov. 26, 1990 & JP-A-02 226 266 (Canon). |