Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5070671 | Roof tiles | John A. Fifield | 1991-12-10 |
| 4431132 | Control valve systems for gas water heaters | Michael J. Edmundson, Christopher Halstead | 1984-02-14 |
| 4292785 | Tile packaging | — | 1981-10-06 |