4. Acoustics
  5. Diaphragm

Wolfram Berger

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Acoustic transducer system

Acoustics – Diaphragm
Patent

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Device that automatically tracks the position of the sun

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate

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Method and arrangement for signal transmission in ultrasonic ech

Measuring and testing – Liquid level or depth gauge
Patent

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Profile ID: LFUS-PAI-P-1565392

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