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7196971 Method and apparatus for damping an ultrasonic transducer suitable for time of flight ranging and level measurement systems  
A method and apparatus for damping an ultrasonic transducer suitable for time of flight ranging and level measurement systems. The ultrasonic transducer comprises a damping component which absorbs...
EP1650254A1 Seal with reduced torque, process for obtaining, its use as seal in flap valve and flap valve  
Sealant (I) comprises elastomeric molded body, which exhibits a layer applied by plasma polymerization. - Independent claims are also included for: - (1) a flap valve for the controlling of the...
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