Number | Date | Country | Kind |
---|---|---|---|
56-42891 | Mar 1981 | JPX |
Number | Date | Country |
---|---|---|
2944744 | Nov 1979 | DEX |
55-55448 | Apr 1980 | JPX |
55-55449 | Apr 1980 | JPX |
56-61048 | May 1981 | JPX |
2016747 | Mar 1979 | GBX |
Entry |
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IEEE Spectrum, vol. 16, No. 8 (Aug. 1979), K. Bulthuis et al., "Ten Billion Bits on a Disk," pp. 26-33. |
Patent Abstracts of Japan, vol. 5, No. 88 (June 9, 1981), & Japanese Patent 56 34154. |
Patent Abstracts of Japan, vol. 5, No. 122 (Aug. 7, 1981), & Japanese Patent 56 61047. |
Patent Abstracts of Japan, vol. 1, No. 73 (July 14, 1977), & Japanese Patent 52 10102. |