4. Electrical audio signal processing systems and devices
  5. One-way audio signal program distribution
  6. Public address system

Franz Kavan

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Stabilizing and control device for two-bladed helicopter rotors

Fluid reaction surfaces (i.e. – impellers) – With gyroscopic reference means for rotor control
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Voice recognition system

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent

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Voice recognition system

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent

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Profile ID: LFUS-PAI-P-847719

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