Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6973939 | Horizontal-flow trap and housing assembly with odor preventing closure mechanism | Michael Higgins | 2005-12-13 |
| 6959723 | Oil sealant-preserving drain odor trap | — | 2005-11-01 |
| 6644339 | Horizontal-flow trap and housing assembly with odor preventing closure mechanism | Michael Higgins | 2003-11-11 |
| 6425411 | Oil sealant-preserving drain odor trap | — | 2002-07-30 |
| 6053197 | Horizontal-flow oil-sealant-preserving drain odor trap | — | 2000-04-25 |
| 5711037 | Waterless urinal | Klaus H. Reichardt | 1998-01-27 |