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Priority to JP50137931ApriorityCriticalpatent/JPS5262035A/ja
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Publication of JPS5423261B2publicationCriticalpatent/JPS5423261B2/ja
H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously