Number | Date | Country | Kind |
---|---|---|---|
11-135047 | May 1999 | JP |
Number | Name | Date | Kind |
---|---|---|---|
4317054 | Caruso et al. | Feb 1982 | |
6091285 | Fujiwara | Jul 2000 |
Entry |
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Correspondence course, “Lecture for Training Specialist in Analogue Circuit Engineering”, 2nd separate volume, Applied Circuit of Operational Amplifier (p. 9, Fig. 1.7), issued by Engineering Research Institute. |