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Absolute calibration technique for broadband ultrasonic transduc

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Acoustic and environmental monitoring system

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Acoustic element tester for an array of hydrophones

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Acoustic transformer with non-piezoelectric core

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Active sonar simulation

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Reexamination Certificate

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Apparatus and method for determining the phase sensitivity of hy

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Apparatus and method for distributed control of seismic data...

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Reexamination Certificate

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Apparatus and method of auto frequency calibration for...

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Reexamination Certificate

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Apparatus for acoustic near field scanning using conformal array

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Apparatus for quantitative measurements of ultrasonic wave power

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Atmospheric turbulence hazard detector

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Reexamination Certificate

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Automatic sensor identification for ultrasonic proximity switche

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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Automatic system and method for testing marine streamers of seis

Communications – electrical: acoustic wave systems and devices – Testing – monitoring – or calibrating
Patent

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