Document Type and Number:
Japanese Patent JPS5243284
Kind Code:
Y2
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Application Number:
JP8606672U
Publication Date:
October 01, 1977
Filing Date:
July 20, 1972
Export Citation:
International Classes:
H04S1/00; H04R1/10; H04R5/04; (IPC1-7): H04R5/04; H04R1/10