Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539474 | Optical switch for an automatic door | — | 1985-09-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539474 | Optical switch for an automatic door | — | 1985-09-03 |