Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D906496 | Water heater venting assembly | Ivan Lee Stiehl | 2020-12-29 |
| D900983 | Secondary double containment pipe | — | 2020-11-03 |
| D882738 | Double containment coupling | — | 2020-04-28 |
| D873389 | Double containment elbow fitting | — | 2020-01-21 |