Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1021012 | Cleanout plug | — | 2024-04-02 |
| 6786815 | Apparatus for venting rooms with exhaust fans | — | 2004-09-07 |
| 6431972 | Multiple plumbing vent apparatus | — | 2002-08-13 |
| 6196246 | Freeze-resistant plumbing system in combination with a backflow preventer | — | 2001-03-06 |
| 5950653 | High pressure relief valve for use with a backflow preventer | — | 1999-09-14 |