Number | Name | Date | Kind |
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3630336 | Johnson et al. | Dec 1971 |
Number | Date | Country |
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131585 | Aug 1982 | JPX |
Entry |
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IBM Tech. Disc. Bulletin, by D. A. Stockwell, vol. 24, No. 8, Jan. 1982, p. 4308. |
IBM Tech. Disc. Bulletin, by V. G. Golding et al., vol. 26, No. 10B, Mar. 1984, pp. 5633-5636. |