Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6052841 | System for preventing toilet overflows | Peter Chapman, Steve Kazemir, Derek John Pyner | 2000-04-25 |
| 5940899 | System for preventing toilet overflows | Peter Chapman, Steve Kazemir, Derek John Pyner | 1999-08-24 |