Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6455000 | Method and apparatus for measuring the concentration of a gas | Wayne Ernest Conrad, Helmut Gerhard Conrad | 2002-09-24 |
| 6419719 | Cyclonic vacuum cleaner | Wayne Ernest Conrad, Helmut Gerhard Conrad | 2002-07-16 |