Patent US 4819049A
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| Patent number | US 4819049A |
|---|---|
| Title | Method of fabricating high voltage and low voltage transistors using an epitaxial layer of uniform thickness |
| Inventors | Roger E. Johnston, Alex Y. Tang |
| Company | Tektronix Inc |
| Filing date | 1988-06-02 |
| Grant date | 1989-04-04 |
| Cites |