Number | Date | Country | Kind |
---|---|---|---|
1-157162 | Jun 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3953254 | Valdman | Apr 1976 | |
4349394 | Wei | Sep 1982 | |
4429324 | Wilkens | Jan 1984 | |
4831424 | Yoshida et al. | May 1989 | |
4870469 | Nishizawa et al. | Sep 1989 | |
4876580 | Nishizawa | Oct 1989 |
Entry |
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"VLSI Technology", S. M. Sze, 1988, FIG. 10 p. 33. |