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JPS60142598

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DESCRIPTION JPS60142598
[0001]
Brief description of the drawings
[0002]
Fig. 4 is a schematic perspective view, a top view, an -S cut side view, and a characteristic view
showing an embodiment of the piezoelectric speaker according to the present invention. FIG. 5 is
a partial cross-sectional view showing another embodiment of the cross-sectional valley-like
groove of the piezoelectric speaker of the present invention. In the figure, 1.1 ... piezoelectric
type speaker, 2 ... frame 13-plate material, 3 at 8a ... groove of cross section valley shape, 4 ...
piezoelectric, diaphragm. ,,.
11-05-2019
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