Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6710346 | Active infrared presence sensor | James L. Levine, Duane S. Miller, Michael A. Schappert | 2004-03-23 |
| 6684743 | Staggered gear for bi-directional operation | Richard H. Harris | 2004-02-03 |