Number | Name | Date | Kind |
---|---|---|---|
3616380 | Lepselter | Oct 1971 | |
3742315 | Iizuka et al. | Jun 1973 | |
3752702 | Iizuka et al. | Aug 1973 | |
3763408 | Kano et al. | Oct 1973 | |
4026740 | Owen | May 1977 | |
4063964 | Peressini et al. | Dec 1977 |
Entry |
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Neues Aus Der Technik, Feb. 1, 1972, No. 1. |
IBM Technical Disclosure Bulletin, vol. 12, No. 7, Dec. 1969, p. 1057. |
IBM Technical Disclosure Bulletin, vol. 19, No. 11, Apr. 1977, pp. 4089 and 4090. |