Number | Name | Date | Kind |
---|---|---|---|
3873889 | Leyba | Mar 1975 | |
4592606 | Mudra | Jun 1986 | |
4990724 | Suppelsa et al. | Feb 1991 | |
5032737 | Holm et al. | Jul 1991 | |
5112230 | DeSimone | May 1992 |
Entry |
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IBM Technical Bulletin, vol. 20, No. 5, p. 1932, Burns et al., Oct. 1977. |