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Application filed by Antonio Da SilvafiledCriticalAntonio Da Silva
Priority to BR6901975UpriorityCriticalpatent/BR6901975U/en
Publication of BR6901975UpublicationCriticalpatent/BR6901975U/en
BR6901975U1989-09-261989-09-26
ADAPTABLE MICROPHONE IN MUSICAL INSTRUMENTS, EXTENDING THE SOUND OF THE MUSICAL INSTRUMENT AND THE USER'S VOICE
BR6901975U
(en)