Document Type and Number:
Japanese Patent JPS54155489
Kind Code:
U
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Application Number:
JP5302878U
Publication Date:
October 29, 1979
Filing Date:
April 21, 1978
Export Citation:
International Classes:
H04R17/10; G10K9/12; G10K9/122; H03K5/13; (IPC1-7): G10K9/12; H03K5/13; H04R17/10