4. Electrical audio signal processing systems and devices
  5. Electro-acoustic audio transducer

Erich Stastny

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Device for producing injection molded parts and comprising heate

Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control
Patent

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Loud-speaker combined with a device for producing lighting effec

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
Patent

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Sound-permeable cover for a loudspeaker

Acoustics – Sound-modifying means
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Profile ID: LFUS-PAI-P-1603271

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