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JPS5942696

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DESCRIPTION JPS5942696
[0001]
Brief description of the drawings
[0002]
1 is a cross sectional view showing the structure of a polyurethane copper wire, FIG. 2 is a cross
sectional view showing the structure of a general acoustic diaphragm unit, and FIG. 3a is a cross
section showing one embodiment of a voice coil bobbin of this invention. FIGS. 3, 4 and 5C are
cross sectional views of other embodiments of the voice coil bobbin according to the present
invention. 7 ···································································································· Rough surface
12-05-2019
1
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