Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581626 | Backflow prevention apparatus | William M. Orr, Timothy Hurt | 2003-06-24 |
| 6513543 | Backflow preventer valve | William M. Orr | 2003-02-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581626 | Backflow prevention apparatus | William M. Orr, Timothy Hurt | 2003-06-24 |
| 6513543 | Backflow preventer valve | William M. Orr | 2003-02-04 |