Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860066 | Semiconductor electro-optical conversion | Peter D. Kirchner, George D. Pettit, Jerry M. Woodall, Steven L. Wright | 1989-08-22 |
| 4821082 | Heterojunction bipolar transistor with substantially aligned energy levels | David J. Frank | 1989-04-11 |