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JPS58184997

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DESCRIPTION JPS58184997
[0001]
Brief description of the drawings
[0002]
1 is a top view of a piezoelectric speaker according to the prior art, FIG. 2 is a sectional view of
the same, FIG. 3 is a frequency characteristic view of the same speaker, and FIG. 4 is a top view
showing an embodiment of the piezoelectric speaker according to the present invention. FIG. 5 is
a sectional view of the same, and FIG. 6 is a characteristic view showing an example of a
frequency characteristic of the same speaker 9. 9.10 · · · · · · · · · Piezoelectric ceramic plate, 11 · · ·
· · · · (vibration plate 1).
11-05-2019
1
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