Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5633778 | Infrared signal interface for use with barrier door operator | James S. Chang | 1997-05-27 |
| 5530300 | Extended range wired remote control circuit | Doug Turner, James S. Chang | 1996-06-25 |
| 5235494 | Electrical controller having pivotally mounted circuit board support | James S. Chang, Douglas R. Turner | 1993-08-10 |