Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6442279 | Acoustic conditioner | David A. Preves, Lawrence T. Hagen, Ning Shen | 2002-08-27 |
| 6359992 | Acoustics conditioner | David A. Preves, Lawrence T. Hagen, Ning Shen | 2002-03-19 |