Issued Patents All Time
Showing 51–51 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4282520 | Piezoelectric horn and a smoke detector containing same | Charlie C. Rogers | 1981-08-04 |
Showing 51–51 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4282520 | Piezoelectric horn and a smoke detector containing same | Charlie C. Rogers | 1981-08-04 |