Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6929465 | Timer circuit for valve activation in oil burner system | John P. Graham | 2005-08-16 |
| 6888390 | Timer circuit for valve activation in oil burner system | John P. Graham | 2005-05-03 |