Marschall; Richard A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Marschall; Richard A..The latest application filed is for "hydrophone and array thereof".
- Marschall; Richard A. - Penrith AU
- Marschall; Richard A. - Ft. Pierce FL
- Marschall; Richard A. - Houston TX
| Patent | Date |
|---|---|
| Hydrophone and array thereof Grant 5,742,559 - Marschall , et al. April 21, 1 | 1998-04-21 |
| Method for acoustic/electromagnetic signal processing Grant 5,471,435 - Marschall November 28, 1 | 1995-11-28 |
| Noise shielded hydrophone Grant 5,381,382 - Marschall January 10, 1 | 1995-01-10 |
| Extended frequency range hydrophone Grant 5,367,497 - Marschall November 22, 1 | 1994-11-22 |
| Seismic noise suppression method Grant 4,937,794 - Marschall , et al. June 26, 1 | 1990-06-26 |
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