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JPS5893099

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DESCRIPTION JPS5893099
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a cross-sectional view of a piezoelectric speaker showing a conventional example, FIGS.
2, 3 and 4 are respectively a cross-sectional view of a piezoelectric speaker showing an
embodiment of this invention Show. 21 иии Disk-like piezoelectric vibrator, 22 иии Fin.
12-05-2019
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