Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6752218 | Fire protection sprinkler head support | Norman J. MacDonald, III, Paul S. F. Silcox | 2004-06-22 |
| 6691790 | Fire-suppression sprinkler system and method for installation and retrofit | Norman J. MacDonald, III | 2004-02-17 |