发明授权
US4829571A Headphone 失效
耳机

Headphone
摘要:
A stereo headphone having left and right headphone units which are connected to a binaural input plug that has left and right input cords respectively connected between the left and right headphone units and wherein the right and left input cords are connected together in parallel between the binaural input plug and a predetermined intermediate point and with a muting switching device mounted at the intermediate point so as to allow muting of both headphone units under selected conditions.
信息查询
0/0