Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6825620 | Inductively coupled ballast circuit | Roy W. Kuennen, David W. Baarman, Ronald C. Markham, Dennis J. Denen | 2004-11-30 |
| 6806649 | Starter assembly for a gas discharge lamp | David W. Baarman, Roy W. Kuennen | 2004-10-19 |
| 6793817 | Lamp assembly for point-of-use water treatment system | Roy W. Kuennen, Eric K. Bartkus, David W. Baarman, Kenneth E. Conrad, Terry L. Lautzenheiser +1 more | 2004-09-21 |
| 6673250 | Radio frequency identification system for a fluid treatment system | Roy W. Kuennen, David W. Baarman, Ronald C. Markham, Terry L. Lautzenheiser | 2004-01-06 |