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(In Japanese)振動発電器及びエレクトレット (Patent unpublished to the public)

Patent code P190015934
File No. S2018-0956-N0
Posted date Mar 25, 2019
Application number P2018-159860
Date of filing Aug 29, 2018
Title (In Japanese)振動発電器及びエレクトレット (Patent unpublished to the public)


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