Number | Date | Country | Kind |
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6-138816 | Jun 1994 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
5050429 | Nishimoto et al. | Sep 1991 | |
5072614 | Hisanaga | Dec 1991 | |
5423212 | Manaka | Jun 1995 |
Entry |
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Heathkit/Zenith Educational Systems, Semi-conductor Devices, 160 & 161, Dec. 1983. |