Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7013606 | Roof pipe chase housing system | Peter Sigrist | 2006-03-21 |
| 4691726 | Method and apparatus for valve assembly for a hot water tank | William E. Schourup | 1987-09-08 |
| 4508130 | Method and apparatus for repairing water leaks | William E. Schourup | 1985-04-02 |