Number | Date | Country | Kind |
---|---|---|---|
57-74726 | May 1982 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4426168 | Jozuka et al. | Jan 1984 |
Number | Date | Country |
---|---|---|
167459 | Dec 1981 | JPX |
Entry |
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IBM Tech. Disc. Bulletin, by D. W. Skinner et al., vol. 21, No. 5, Oct. 1978, pp. 1828-1829, 400-240.4. |