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Sonic or ultrasonic transducer
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Patent number 7,411,335
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Issue date Aug 12, 2008
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Endress + Hauser GmbH + Co. KG
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Manfred Eckert
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Fill-level indicator
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Patent number 5,866,815
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Issue date Feb 2, 1999
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Endress + Hauser GmbH + Co.
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Rolf Schwald
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Ultrasonic transducer
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Patent number 5,737,963
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Issue date Apr 14, 1998
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Endress + Hauser GmbH + Co.
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Manfred Eckert
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G01 - MEASURING TESTING
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Sound or ultrasound sensor
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Patent number 5,726,952
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Issue date Mar 10, 1998
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Endress + Hauser GmbH + Co.
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Manfred Eckert
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Ultrasonic transducer
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Patent number 5,664,456
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Issue date Sep 9, 1997
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Endress + Hauser GmbH + Co.
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Manfred Eckert
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL