Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6192751 | Non-invasive low frequency elastic wave fluid level sensing system for sludge laden environments | Peter J. Stein | 2001-02-27 |
| 5920524 | Hydrophone arrangement and bunker for housing same | Peter J. Stein | 1999-07-06 |