Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636129 | Two-tiered tuned filter | Joseph A. Zennamo, Jr. | 2003-10-21 |
| 6560087 | Electronic signal filter with surge protection mechanism | Joseph A. Zennamo, Jr., William Louise, Dale W. Marland | 2003-05-06 |