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US ACOUSTICS CORP
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US ACOUSTICS CORP
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Priority to ES125513UpriorityCriticalpatent/ES125513Y/es
Publication of ES125513UpublicationCriticalpatent/ES125513U/es
Application grantedgrantedCritical
Publication of ES125513YpublicationCriticalpatent/ES125513Y/es
Una placa acústica en forma del producto moldeado y secado de una mezcla íntima de perlita expandida, arcilla refractaria y aglomerante de silicato de sodio.