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DESCRIPTION JPS58111589
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG. 2 is a crosssectional view in which a part of a different embodiment is omitted. DESCRIPTION OF SYMBOLS
1 ... fixed member, 2 ... base material, 3 ... rotation member, 4 ... main part, 5, 7 ... cord, 6 ... sound
channel, 8 ... ear microphone, 9 ... speaker.
04-05-2019
1