Number | Date | Country | Kind |
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2-253137 | Sep 1990 | JPX |
Number | Name | Date | Kind |
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4554467 | Vaughn | Nov 1985 | |
4577124 | Koike | Mar 1986 | |
4733111 | Fassino et al. | Mar 1988 |
Number | Date | Country |
---|---|---|
279297 | Mar 1990 | JPX |
Entry |
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J. Millman, Integrated Electronics:Analog and Digital Circuits and Systems, pp. 625-5 (1972). |