Number | Name | Date | Kind |
---|---|---|---|
3949856 | Ulber et al. | Apr 1976 | |
4268182 | Mizutani et al. | May 1981 |
Number | Date | Country |
---|---|---|
2512259 | Sep 1976 | DEX |
2646336 | Apr 1978 | DEX |
1499152 | Jan 1978 | GBX |
Entry |
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IBM Technical Disclosure Bulletin, vol. 24, No. 10, Mar. 1982, pp. 5015-5016. |