Improvements introduced in electromagnetic sound recorders-reproducers characterized because it consists of a recorder-player head with two independent magnetic circuits with their respective coils and provided with recording-and-playback irons deviated from the normal to the direction of the tape 45º to the right one and 45º to the left otroformando asºambos entre-irons an angle of 90º and also of another head erasing exactly equal but between-wider irons with which to erase what has recorded its counterparts of the first head. (Machine-translation by Google Translate, not legally binding)
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