Number | Date | Country | Kind |
---|---|---|---|
2-301767 | Nov 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4778782 | Ito et al. | Oct 1988 |
Number | Date | Country |
---|---|---|
234563 | Sep 1987 | EPX |
275319 | Jul 1988 | EPX |
Entry |
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Patent Abstracts of Japan, vol. 12, No. 55 (M-669) [2902], Feb. 19, 1988, & JP-A-62-202781, Sep. 7, 1987, T. Akitani, "Recording Material And Production Thereof". |