Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830117 | Shut-off device for an automatic sprinkler | — | 1989-05-16 |
| 4830118 | Shut-off device for a sprinkler assembly | — | 1989-05-16 |
| 4804046 | Shut-off device for a sprinkler assembly | — | 1989-02-14 |
| 4676320 | Shut-off device for a sprinkler assembly | — | 1987-06-30 |
| 4638866 | Fire-sprinkler cut-off device | Charles W. Kalck, Sr. | 1987-01-27 |