Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4574829 | Automatic drain valve | Ernie W. Cummings | 1986-03-11 |
| 4562855 | Automatic drain valve | Ernie W. Cummings | 1986-01-07 |
| 4444217 | Automatic drain trap | Ernest W. Cummings | 1984-04-24 |