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APPLIC IND PLASTIQUES Ste
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APPLIC IND PLASTIQUES Ste
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Publication of ES78823YpublicationCriticalpatent/ES78823Y/es
Holding Or Fastening Of Disk On Rotational Shaft
(AREA)
Compositions Of Macromolecular Compounds
(AREA)
Abstract
Un disco fonográfico, caracterizado por el hecho de que su parte central tiene dos hendiduras que se cruzan en el centro geométrico de la pista sonora.