Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6250324 | In-line venturi | Wayne Ernest Conrad, Helmut Gerhard Conrad, Richard Stanley Phillips, Andrew Richard Henry Phillips, Michael John Preston | 2001-06-26 |
| 5934328 | In-line venturi | Wayne Ernest Conrad, Helmut Gerhard Conrad, Richard Stanley Phillips, Andrew Richard Henry Phillips, Michael John Preston | 1999-08-10 |
| 5676173 | In-line venturi | Wayne Ernest Conrad, Helmut Gerhard Conrad, Richard Stanley Phillips, Andrew Richard Henry Phillips, Michael John Preston | 1997-10-14 |
| 5452740 | Water conservation system | — | 1995-09-26 |
| 5339859 | Water conservation system | — | 1994-08-23 |
| 4833458 | Smoke and fire detector for remote sensing | — | 1989-05-23 |