Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5799340 | Water-conserving urinal | Roy K. Fischer | 1998-09-01 |
| 5575020 | Water-conserving urinal | Roy K. Fischer | 1996-11-19 |
| 5390374 | Water-conserving urinal | Donald K. Lachowitzer | 1995-02-21 |