Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6250085 | Temperature self-regulated integrated circuits and devices | — | 2001-06-26 |
| 5708367 | Digital position sensor | — | 1998-01-13 |
| RE34731 | Digital level sensing probe system | Calvin Spencer Lee | 1994-09-20 |
| 5138880 | Digital level sensing probe system | Calvin Spencer Lee | 1992-08-18 |