Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6786225 | Three-stage relay control | Mark H. Stark, John J. Love | 2004-09-07 |
| 6705342 | Modulating gas valve with natural/LP gas conversion capability | William P. Butler | 2004-03-16 |