Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5299678 | Limit switch mechanism for garage door opener | James S. Chang, Mark D. Siegler | 1994-04-05 |
| 5235494 | Electrical controller having pivotally mounted circuit board support | James S. Chang, Russell L. Powers | 1993-08-10 |