Number | Date | Country | Kind |
---|---|---|---|
53-118248 | Sep 1978 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3614478 | Schiff | Oct 1971 | |
3969682 | Rossum | Jul 1976 |
Entry |
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Franco, "Use Transconductance Amplifiers to Make Programmable Active Filters," Electronic Design, vol. 24, No. 19, pp. 98-101, Sep. 13, 1976. |