Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290098 | Smoke alarm cover | — | 1987-06-02 |
| 4529976 | Smoke detector with masking shield | Donald C. Roylance | 1985-07-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290098 | Smoke alarm cover | — | 1987-06-02 |
| 4529976 | Smoke detector with masking shield | Donald C. Roylance | 1985-07-16 |