Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10969143 | Method for detecting a non-closing water heater main gas valve | John D. Mitchell, Rolf L. Strand, Timothy J. Smith | 2021-04-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10969143 | Method for detecting a non-closing water heater main gas valve | John D. Mitchell, Rolf L. Strand, Timothy J. Smith | 2021-04-06 |