Number | Date | Country | Kind |
---|---|---|---|
56-84343 | Jun 1981 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3336540 | Kwartiroff et al. | Aug 1967 | |
3748602 | Delfrate et al. | Jul 1973 | |
3794935 | Tsuchiya et al. | Feb 1974 | |
3940709 | Heaslett | Feb 1976 | |
4004253 | Takasaki et al. | Jan 1977 | |
4110798 | Miller et al. | Aug 1978 | |
4371901 | Shah | Feb 1983 | |
4389683 | Lelandais | Jun 1983 | |
4405954 | Guisinger | Sep 1983 |
Number | Date | Country |
---|---|---|
355336 | Feb 1980 | ATX |
2227675 | Dec 1974 | DEX |
Entry |
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"A Method to Realize a Variable Equalizer", by K. Endo et al., Electronics & Communications in Japan, vol. 52-A, #4, 1929. |