Number | Name | Date | Kind |
---|---|---|---|
3354364 | Nakamura | Nov 1967 | |
3656031 | Bresee et al. | Apr 1972 | |
3717516 | Hatcher et al. | Feb 1973 | |
3723830 | Frederiksen et al. | Mar 1973 |
Number | Date | Country |
---|---|---|
1,959,817 | Jun 1971 | DT |
Entry |
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R. Warner et al., "Integrated Circuits-Design Prin. and Fab.", McGraw-Hill, 1965, pp. 65-67. |