Patent US 4819049A
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Patent number | US 4819049A (click link for details and documents via Google Patents) |
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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 |