Document Type and Number:
Japanese Patent JPS5353444
Kind Code:
Y2
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Application Number:
JP4710773U
Publication Date:
December 21, 1978
Filing Date:
April 20, 1973
Export Citation:
International Classes:
H04R3/00; H04R3/12; H04R3/14; (IPC1-7): H04R3/00; H04R3/12