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BTECH ACOUSTICS LLC
| BTECH ACOUSTICS LLC Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20120236689 | Acoustic transducers for underwater navigation and communication - Methods and transducers for producing acoustical signals having a spiral wavefront with omnidirectional magnitude and a phase that varies with angle and transducers for producing broadband omnidirectional reference signals for underwater navigation and communication. | 09-20-2012 |