Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5382786 | Integrated photodetector with moving destination circuit | — | 1995-01-17 |
| 5287107 | Optical isolation amplifier with sigma-delta modulation | David J. Gampell, Michael D. McJimsey, Randall Canha | 1994-02-15 |
| 5061859 | Circuits for realizing an optical isolator | David J. Gampell, James S. Ignowski | 1991-10-29 |
| 4430580 | Bistable switching circuit | — | 1984-02-07 |
| 4411070 | Tree-trimming apparatus | George A. Boyum, Robert A. Renner | 1983-10-25 |
| 4242947 | Hydraulic actuator | Robert A. Renner | 1981-01-06 |