Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7570543 | Normally closed pressure-sensitive hydrophone switch | — | 2009-08-04 |
| 6318497 | Pressure-sensitive switch, its method of calibration and use in a hydrophone array | Thomas J. de Groot, William H. Hulsman, Robert Claude Prescott, Richard D. Smith | 2001-11-20 |