Item CR-AN-AH-MAG-PATEN-000293 - "Solicitud de International General Electric Company Incorporated para inscribir el invento: Invención relacionada con aparatos para producir sonido de corriente eléctrica, comunmente se conocen con el nombre de ""Teléfonos de alta voz o alto parlantes"""

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CR AN CR-AN-AH-MAG-PATEN-000293

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"Solicitud de International General Electric Company Incorporated para inscribir el invento: Invención relacionada con aparatos para producir sonido de corriente eléctrica, comunmente se conocen con el nombre de ""Teléfonos de alta voz o alto parlantes"""

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  • 1924-11-07 - ? (Creation)

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