Number | Name | Date | Kind |
---|---|---|---|
3693059 | Harris | Sep 1972 | |
3710209 | Webb et al. | Jan 1973 | |
3900712 | Fukao | Aug 1975 | |
3965399 | Walker | Jun 1976 |
Number | Date | Country |
---|---|---|
411619 | Jun 1934 | GBX |
Entry |
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IBM Tech. Disc. Bulletin, vol. 17, #11, Apr. 1975, p. 3377. |